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US Patent: 1,483,721
Valve grinder
Patentee:
Delbert F. Dunham - Los Angeles, CA

USPTO Classifications:
74/74

Tool Categories:
woodworking machines : handheld power tools : handheld power tool accessories
trade specific : automobile mechanic

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 20, 1922
Granted: Feb. 12, 1924

Patent Pictures:
USPTO pdf tiff
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Description:
Conversion Tool

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