...before their discovery or invention thereof, and wh,ch has not been abandoned to the public or been in public use, or on sale, for more than two years prior to the application for a patent, are entitled to the exclusive right of manufacturing and selling such...

...before their discovery or invention thereof, and which has not been abandoned to the public or been in public use, or on sale, for more than two years prior to the application for a patent, are entitled to the exclusive right of manufacturing and selling such...

...composition of matter, or any new and useful improvement thereof, not known nor used by others in thia country, and not patented or described in any printed...unless the same is proved to have been abandoned, may upon payment of the fees required by law, and other due proceedings had, obtain a patent therefor....

...invented or diseovin.il any new and useful art, machine, manufacture, or composition of matter, or алу new and useful improvement thereof, not known or used...or described in any printed publication in this or in any foreign country, before his invention or discovery thereof, and not in public use or on sale...

...useful improvement thereof, not known nor used by others in this country, and not patented or de cribed in any printed publication in this or any foreign...unless the same is proved to have been abandoned, may, upon payment of the fees required by law, and other due proceeding had, obtain a patent therefor....

...foreign country, Or if it had been previously known or used by others in this country, or if it had been in public use or on sale for more than two years prior to his application for a patent, the letters-patent cannot be sustained. 16 Stat. 201. Competent proof of...

...discovery — as, for example, the improvement must not only be new and useful, but it must be one not known or used by others in this country, and not patented or described before the invention or discovery in any printed publication in this or any foreign country, and must...

...his decision is conclusive. The statute also provides, (§ 24,) that an inventor of an improvement not known or used by others in this country, and not...patented, or described in any printed publication, in tin's or any foreign country, before his invention, and not in public use or on sale, for more than...

...applications are." And the former section prohibits the grant of a patent to one whose invention has been in public use or on sale for more than two years prior to his application. It is as proper for the Office to consider evidence of this character in regard to public...

...or discovered any new and useful art, machine, manufacture, or composition of matter, or any new or useful improvement thereof, not known or used by others...or discovery thereof, and not in public use or on public sale for more than two years prior to his application, unless the same is proved to have been...