United States patents, 1790-1870
Subtitle: new uses for old ideas
By: [by] Peter C. Welsh.
Series: Contributions from the Museum of History and Technology, paper 48
Publisher: Smithsonian Institution; for sale by the Superintendent of Documents, U.S. Govt. Print. Off.
Published: 1965
Place of publication: [Washington
Language: eng
Number of pages: 151
Subjects: Patents -- United States -- History; Inventions -- History; United States -- History -- Sources
Notes: Bibliographical footnotes.