Canadian Patent No. 30172 — Method & App. for Converting & Distributing Electric Currents
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Canadian Patent No. 30172 — Method & App. for Converting & Distributing Electric Currents
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Public-domain status shown for US. Wikisource marks this text PD-old-80-US; publication year 1888 is within the US public-domain cutoff
Public-domain status shown for US. Wikisource marks this text PD-old-80-US; publication year 1888 is within the US public-domain cutoff