§3. The subject to be patented

8. Patents are granted, 1. For inventions and discoveries. 2. For importations. 1. Patents for inventions and discoveries. By the act, of July 4, 1836, sect. 6, it is enacted, that any person or persons having discovered or invented any new and useful art, machine,, manufacture, or composition of matter, or any new and useful improvement on any art, machine, manufacture, or composition of matter, not known or used by others before his or their discovery or invention thereof, and not, at the time of his application for a patent, in public use or on sale, with his consent or allowance, as the inventor or discoverer, and shall desire to obtain an exclusive property therein, may make application in writing to the commissioner of patents, expressing such desire, and the commissioner on due proceedings had, may grant a patent therefor.

9. The thing to be patented must be an invention Or discovery; it must be new and useful.

10. - 1. The invention or discovery must be something which the inventor has himself found out; some peculiar device or manner of producing any given effect. A patent cannot, therefore, be taken out for the elementary principles of motion, which philosophy and science have discovered, but only for the manner of applying them. 1 Gallis. 478; 2 Gallis. 51.

11. A patent may be taken out for an improvement on a machine which is known and used; 3 Wheat. 454; but a mere change of former proportions, will not entitle a party to a patent. 1 Gallis. 438; 2 Gallis. 51.

12. It is provided by the act of July 4, 1836, s. 13, that whenever the original patentee shall be desirous of adding the description and specification of any new improvement of the original invention or discovery which shall have been invented or discovered by him subsequent to the date of his patent, he may, like proceedings being had in all respects as in the case of original applications, and on the payment of fifteen dollars, as hereinbefore provided, have the same annexed to the original description and specification; and the commissioner shall certify, on the margin of such annexed description and specification, the time of its being annexed and recorded; and the same shall thereafter have the same effect in law, to all intents and purposes as though it had been embraced in the original description and specification.

13. And by the act of March 3, 1837, s. 8, that, whenever application shall be made to the commissioner for any addition of a newly discovered improvement to be made on an existing patent, or when ever a patent shall be returned for correction, and re-issue, the specification of claim annexed to every such patent shall be subject to revision and restriction, in the same manner as are original applications for patents; the commissioner, shall not add any such improvement to the patent in the one case, nor grant the re-issue in the other case, until the applicant shall have entered a disclaimer, or altered his specification of claim in accordance with the decision of the commissioner; and in all such cases the applicant, if dissatisfied with such decision, shall have the same remedy and be entitled to the benefit of the same privileges and proceedings as are provided by law in the case of original applications for patents.

14. - 2. The thing patented must be a new and useful invention, discovery or improvement.

15. Among inventors, he who is first in time, has a right to the patent for the invention. Pet. C. C. R. 394.

16. But by the act of March 3, 1839, sect. 7, it is provided, that every person or corporation who has, or shill have, purchased or constructed any newly invented machine, manufacture, or composition of matter, prior to the application by the inventor or discoverer for a patent, shall be held to possess the right to use, and vend to others to be used, the specific machine, manufacture, or composition of matter so made or purchased, without liability therefor to the inventor, or any other person interested in such invention; ana no patent shall be held to be invalid by reason of such purchase, sale, or use, prior to the application for a patent as aforesaid, except on proof of abandonment of such invention to the public; or that such purchase, sale, or prior use has been for more than two years prior to such application for a patent.

17. By the term useful invention is meant an invention which may be applied to some beneficial use in society, in contradistinction to an invention which is injurious to morals, to the health, or good order of society. 1 Mason, C. C. R. 302; 4 Wash. C. C; R. 9. The term is also opposed to that which is frivolous or mischievous. 1 Mason, C. C. R. 182; Renouard, 177; Perpigna, Man. des Inv. c. 2, s. 1, page 50. See 3 Car. & P. 502; 1 Pet. C. C. R. 480; 1 U. S. Law Journ. 563; 1 Paine, 203; 2 Kent, Com. 368, Dr; Phill. on Pat. c. 7, s. 14.

18. The act of August 29, 1842, sect, 3, provides that any citizen or citizens, or alien or aliens, having resided, one year in the United States, and taken the oath of his or their intention to become a citizen or citizens, who by his, her, or their own industry, genius, efforts, and expense, may have invented or produced any new and original design for a manufacture, whether of metal, or other material or materials, or any new and original design for the printing of woolen, silk, cotton, or other fabrics, or any new and original design for a bust, statue, or has relief or composition in alto or basso relievo, or any new and original impression or ornament, or to be placed on any article of manufacture, the same being formed in marble or other material, or any new and useful pattern, or print, or picture, to be either worked-into or worked on, or printed, or painted, or cast, or otherwise fixed on, any article of manufacture, or any new and original shape or configuration of ally article of manufacture not known or used by others before his, her, or their invention or production thereof, and prior to the time of his, her, or their application for a patent therefor, and who shall desire or obtain an exclusive Property or right therein to make, use, and sell and vend. the same, or copies of the same, to others, by them, made, used, and sold, may make application in writing to the commissioner of patents, expressing such desire, and the commissioner, on due proceedings had, may grant a patent therefor, as in the case. now of application for a patent: Provided, That the fee in such cases which by the now existing laws would be required of the particular applicant shall be one-half the sum, and that the duration of said patent shall be seven years, and that all the regulations and provisions which now apply to the obtaining or protection of patents not inconsistent with the provision's of this act, shall apply to applications under this section.