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Patentees' Manual Showing How to Invent and the Manner of Securing the Invention by Letters Patent in Canada and Foreign Countries [microform]: Contai
Patentees' Manual Showing How to Invent and the Manner of Securing the Invention by Letters Patent in Canada and Foreign Countries [microform] Containing Also the Patent, Trade Mark, Design and Copy-right Laws of the Dominion of Canada With Synopsis...