...patent is void, it is provided that for this purpose the defendant may prove " that the thing thus secured by patent, was not originally discovered by...some public work, anterior to the supposed discovery by the patentee." And again in the additional patent act of April 17th, 1800, the first section, authorizing...

...discoverer of the thing patented, or of a substantial and material part thereof claimed as new ; or that it had been described in some public work anterior to the supposed discovery thereof by the patentee, or 'had been in public use, or on sale with th,e consent or allowance of the...

...•— v:" : :'" • J patented, or of a substantial or material part thereof claimed as new, or that it had been described in some public work anterior to the supposed discovery thereof by the patentee, or had been in public use, or on sale with the consent and allowance of the...

...discoverer of the thing patented, or of a substantial and material part thereof claimed as new, or that it had been described in some public work anterior to the supposed discovery thereof, by the patentee, or had been in public use, or on sale with the consent and allowance of the...

...discoverer of the thing patented, or of a substantial and material part thereof claimed as new, or that it had been described in some public work anterior to the supposed discovery thereof by the patentee, or had been in public use or on sale with the consent and allowance of the...

...discoverer of the thing patented, or of a substantial and material part thereof claimed as new, or that it done, in order to avoid the payment of postage, each person, so offending thereof by the patentee, or had been in public use, or on sale with the consent and allowance of the...

...of the United States, if the thing patented was not originally discovered by the patentee, but hac been in use, or had been described in some public work, anterior to the supposed discovery by the patentee, or if he has surreptitiously obtained a patent for the discovery of another person,...

...public, or that the thing, l^us secured by patent, was not originally discovered by the and patent ' patentee, but had been in use, or had been described, in some void, in the public work, anterior to the supposed discovery of the patentee, casesmention- Qr ^^ ^...

...shall fully appear to have been made, for the purpose of deceiving the public, or that the thing, thus secured by patent, was not originally discovered by...anterior to the supposed discovery of the patentee, or that he had surreptitiously obtained a patent for the discovery of another person : in either of...

...fully appearing to have been made for thepurpos« of deceiving the public,) or that the thing thus secured by patent, was not originally discovered by...public work, anterior to the supposed discovery of flie patentee, or that he had surreptitiously obtained a patent for the div cover? of another person,...