The story of the American patent system; 1790
By: April 10, 1940
Publisher: U.S. Govt. print. off.
Published: 1940
Place of publication: Washington]
Language: eng
Number of pages: 28
Subjects: Patents
Other titles: American patent system, The story of.
Notes: Illustrations on p. [2] and [3] of cover.

On verso of t.-p.: U.S. Department of commerce. Harry L. Hopkins, secretary. Patent office. Conway P. Coe, commissioner.