Valve cage grinder
United States Patent 2721425
US Patent References:
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- - 1702796

Roll grinding machine
- - 1831085

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- - 1839775

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- - 1902629

Lathe
- - 2249148


Inventors:
Niel, Christensen
Publication Date:
10/25/1955
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Assignee:
Edward, Benton Wilkey
Primary Class:
451/287
Other Classes:
451/159
International Classes:
B24B15/00
US Patent References:
2309615Crankshaft grinder
2424109Crankshaft grinding machine
Foreign References:
DE137161C
CH229906A
DE375924C
FR906983A