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US Patent: 2,501,936
Variable-speed drive
Patentee:
John D. Gayer - Dayton, OH

USPTO Classifications:
475/185, 475/904

Tool Categories:
electrical devices : electric motors : gear motors

Assignees:
Brown-Brockmeyer Co. - Dayton, OH

Manufacturer:
Brown-Brockmeyer Co. - Dayton, OH

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 10, 1949
Granted: Mar. 28, 1950

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Brown-Brockmeyer Co.

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