Machines not elsewhere specified – Material working – abrading – or founding machinery – Abrading
Patent
1990-02-27
1992-11-03
Holtje, Nelson C.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Abrading
Patent
active
D03307158
REFERENCES:
patent: D214847 (1969-08-01), Urbach
patent: D215465 (1969-09-01), Ball et al.
patent: D231852 (1974-06-01), Walsh
Compelube John
Friedhoff Robin D.
Welch Joe L.
Coburn Optical Industries Inc.
Davis Antoine D.
Holtje Nelson C.
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