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US Patent: 1,527,247
Electric Motor Driven Change Speed Device
Patentee:
Constant Bouillon - Torrington, CT

USPTO Classifications:
318/10, 477/111, 477/15, 74/339, 74/344, 74/471R, 74/533

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Oct. 15, 1921
Granted: Feb. 24, 1925

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Hendey Machine Co.
Description:
Southgate & Southgate - patent attorneys

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