Babcock's book for inventors
Subtitle: an explanatory statement and guide for clients and others interested in U. S. and foreign patents, trade marks, copyrights and similar exclusive privileges
By: by Wm. H. Babcock & Son.
Publisher: Beresford
Published: 1914
Place of publication: Washington, D.C
Language: eng
Number of pages: 84
Subjects: Patents
Notes: "Letters of appreciation and approval written during recent years" : p. [63]-83.