Testimony in behalf of the extension of the patent of B. Frank. Palmer, for an improvement in artificial legs, dated November 4th, 1846
Subtitle: before the Hon. Philip F. Thomas, commissioner of patents, hearing, October 1860
By: Charles F. Stansbury
Contributors: United States. Patent Office
Publisher: s.n.
Published: 1860
Place of publication: United States
Language: eng
Number of pages: 84
Subjects: Trials, litigation; Patent extensions; Artificial legs; Patents
Notes: Cover title.