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Stratford Manufacturing, Inc. Patents
Stratford Manufacturing, Inc.
Chardon, OH
No. of patents:

Patent Number Title Of Patent Date Issued
4382218 Speed control for fan motor May 3, 1983
A pair of anti-parallel connected NPN transistors function in push-pull manner to regulate alternately current power applied via the transistors to an induction motor driving a fan providing a generally constant motor load. As the transistors apply more or less current to the motor by

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