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US Patent: 134,857
Slotting and Keyseat Machines
Patentee:
John H. Cranston - Norwich, New London County, CT

USPTO Classifications:
409/307, 409/334

Tool Categories:
metalworking machines : metal slotting machines
metalworking machines : key seating machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Jan. 14, 1873

Patent Pictures:
USPTO pdf tiff
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