Patents and how to obtain them
Subtitle: a book for inventors ...
Published: 1917
Place of publication: Washington?
Language: eng
Format: [electronic resource];
Number of pages: 40
Subjects: Patent practice; Patents; Handbooks, manuals; Inventions
Notes: Cover-title.

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Electronic reproduction. New York, N.Y.: Columbia University Libraries, 2016. Digitized by the Internet Archive.

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