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US Patent: 1,287,731
Automatic Grinding Machine
Patentee:
Friederich Müller (exact or similar names) - Hartford, CT

USPTO Classifications:
451/221, 451/335, 451/544

Tool Categories:
metalworking machines : grinders

Assignees:
Pratt & Whitney Co. - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: May 02, 1917
Granted: Dec. 17, 1918

Patent Pictures:
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Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pratt, Whitney & Co.

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