...he has become entitled to that protection which the patent laws are intended to secure for "any new and useful improvement on any art, machine, manufacture, or composition of matter." Such combination, however simple and obvious, if entirely new, is patentable, and not the less so because...

...discovered or invented any new or useful art, machine, manufacture, or composition of matter, or any new or useful improvement on any art, machine, manufacture,...before his or their discovery or invention thereof," mny apply for a patent, &c. The applicant is required to " make oath or affirmation that he does verily...

...INVENTIONS ARE PATENTABLE. SECTION 4886. Any person who has invented or discovered any new and useful art, machine, manufacture, or composition of matter, not known or used by others in this country, before his invention or discovery thereof, and not patented or described in any printed...

...ground for a patent. All which the Act of Congress itself requires is that the invention be for "any new and useful improvement on any art, machine, manufacture, or composition of matter," etc. 5 Stat. at Large, p. 119, 6. Must it not then be considered such an improvement, if operating...

...they have 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 before the application, and shall present a petition to the Secretary of State, signifying a desire...

...sees. 9430, 9466.) Section 4886 provides : Any person who has invented or discovered any new and useful art, machine, manufacture, or composition of matter, * * * not known or used by others in this country, and not patented, or described in any printed publication in this or any foreign country,...

...singular. It reads, "Any person or persons, having discovered any new and useful art, . . . not known by others before his or their discovery or invention...not, at the time of his application for a patent," etc. "But before any inventor shall receive a patent for any such new invention or discovery, he shall...

...composition of matter. The patent law of July 4, 1836, authorizes the granting of a patent for any new and useful improvement on any art, machine, manufacture, or composition of matter. Section 6. It is often very difficult to say what is a new and useful improvement, the cases often...

...a printed publication. U 1892 CD 395; 143 US 587. l* At the time of this decision the statute read "not known or used by others before his or their discovery or invention thereof (act of 1836) ; the clause "in this country" in the knowledge and use clause of the present; .statute...

...either in this or any foreign country." The Act of 1836 changed the knowledge and use clause to read "not known or used by others before his or their discovery or invention thereof." These successive alterations throw into relief the fact that the section makes the criterion of novelty...