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US Patent: 389,243
Key Seat Cutting Machine
Patentees:
Randall A. Palmer - East Saginaw, Saginaw County, MI
John E. Palethorp - Port Huron, St. Clair County, MI

USPTO Classifications:
409/304, 409/335

Tool Categories:
metalworking machines : key seating machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 02, 1888
Granted: Sep. 11, 1888

Patent Pictures:
USPTO pdf tiff
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