Law and facts on patents and inventions.
Subtitle: A practical and legal business guide for developing, patenting, perfecting, manufacturing and operating inventions. Compiled from a life of experience. What to do and what not to do ...
By: By Harvey L. Hopkins ...
Publisher: C.J. Johnson
Published: 1887
Place of publication: Chicago
Language: eng
Number of pages: 152
Subjects: Patents.; Patent laws and legislation -- United States.; Inventions.