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US Patent: 2,308,472
Valve seat grinding device
Patentee:
John A. Smith, II - Cincinnati, OH

USPTO Classifications:
384/537, 451/430, 451/548

Tool Categories:

Assignees:
United States Electrical Tool Co. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 24, 1941
Granted: Jan. 12, 1943

Patent Pictures:
USPTO pdf tiff
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