Swain v. Holyoke Machine Co.

Citations

• 111 F. 408
• 49 C.C.A. 419
• 1901 U.S. App. LEXIS 4395

Syllabus

<p>Patents—Prior Public Use—Evidence of Experimental Character.</p> <p>Where it is shown that an inventor installed a machine embodying his .complete .invention, for practical use by a purchaser, more than two years before his application for a patent therefor, the burden rests upon him to sustain a claim that such use was experimental by proofs that are full, unequivocal, and convincing; and his own unsupported testimony, given 20 years afterwards, that the installation was for experimental purposes only, is insufficient.</p>