The Inventors̓ help
By: Marion & Marion.
Contributors: Marion & Marion (Firm)
Edition: 5th ed.
Series: CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 92287
Publisher: Marion & Marion
Published: 1993
Place of publication: [Montréal?]
Language: eng
Format: Microform
Number of pages: 93
Subjects: Patent laws and legislation.; Patent laws and legislation -- Canada.; Patent laws and legislation -- United States.
Notes: "All former circulars withdrawn."

Includes index.

Filmed from a copy of the original publication held by the National Library of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1993.

120, [1] p., [23] leaves of plates : ill., ports. ; 19 cm.