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US Patent: 2,821,818
Lapping Machine and Automatic Feed Mechanism Therefor
Patentees:
Harold E. McGee - Rockford, Winnebago County, IL
Walter S. Swanson - Rockford, Winnebago County, IL

USPTO Classifications:
451/292, 451/331

Tool Categories:
metalworking machines : grinders : lapping machines
metalworking machines : metalworking machine mechanisms

Assignees:
Crane Packing Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 18, 1954
Granted: Feb. 04, 1958

Patent Pictures:
USPTO pdf tiff
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