Fox, H.G. The Canadian law and practice relating to letters patent for inventions - The Carswell Company Ltd Toronto 1969 - lxxvi,835 - Canadian law Letters patent Licence Infringement Impeachment Exclusive rights ISBN: 459 30870 x Nat. Bib. No.: 3353 Nat. Bib. Agency Control No.: 608.1 FOX Subjects--Topical Terms: Engineering & Technology Universal Decimal Class. No.: 608.1