Inventor's manual, how to work a patent to make it pay
Subtitle: a guide for inventors, in perfecting their inventions, taking out their patents, and disposing of them, and cautions as to pitfalls for the unwary
By: by George M. Hopkins, rev. by A. A. Hopkins.
Contributors: Hopkins, Albert Allis, 1869- ed.
Edition: 2d ed., rev. and enl., including the new 1900 census of the United States by counties containing a population of over ten housand.
Publisher: The Norman W. Henley publishing company
Published: 1918
Place of publication: New York
Language: eng
Number of pages: 144
Subjects: Patents; Inventions
Notes: First edition, 1889, and New edition, 1901, issued anonymously.