Your invention
Subtitle: how to protect and merchandise it
By: by Elmore B. Lyford, B. S.; 9 illustrations.
Publisher: Radio & technical publishing co.
Published: 1935
Place of publication: New York city
Language: eng
Number of pages: 210
Subjects: Inventions.; Patents -- United States.; Trademarks -- United States.; Copyright -- United States.
Notes: Blank pages for "Memorandum" (206-210)