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All Patents in class 310/138
Patents 1 - 2 of 2
First set of recordsLast set of records
660,908Oct. 30, 1900B.G. LammeVariable-speed electric motorDC motors
1,201,837Oct. 17, 1916J.C. LincolnPortable Means for Securing the Reverse Flow of Electric Currentelectrical devices
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