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US Patent: 1,743,134
Motor-driven machine
Patentees:
Henry J. Kingsbury - Kalamazoo, MI
William C. Hammond - Kalamazoo, MI

USPTO Classifications:
310/56, 310/66, 451/294

Tool Categories:

Assignees:
Hill-Curtis Co. - Jamestown, NY

Manufacturer:
Curtis Machine Corp. - Jamestown, NY

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 11, 1926
Granted: Jan. 14, 1930

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Curtis Machines Corp.
Description:
The machine is a grinder that uses filtered air to cool the motor.

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