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US Patent: 1,527,247
Electric Motor Driven Change Speed Device
Patentee: Constant Bouillon (exact or similar names) - 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 (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hendey Machine Co.
Description: Southgate & Southgate - patent attorneys

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