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Patent laws and legislation, Droit, Brevets d'inventionShowing 1 featured edition. View all 1 editions?
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Edition 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"All former circulars withdrawn."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.
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