Pioneer inventions and pioneer patents
Subtitle: a lecture on patent law delivered to the senior engineering students of Purdue university ...
By: by Frank Keiper.
Edition: 2d ed.
Publisher: Pioneer publishing company
Published: 1924
Place of publication: Rochester, N.Y
Language: eng
Number of pages: 152
Subjects: Patent laws and legislation -- United States.; Patents -- United States.
Notes: Includes illustrative United States patent specifications with diagrams.