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US Patent: 1,709,428
Valve grinder
Patentee:
John H. K. Carpenter (exact or similar names) - Richmond, VA

USPTO Classifications:
451/117

Tool Categories:
handheld power tools
trade specific : vehicle repairer : vehicle mechanic : valve and seat maintenance

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 02, 1928
Granted: Apr. 16, 1929

Patent Pictures:
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