Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment
Patent
1975-09-08
1980-11-11
Douglas, Alan P.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Element or attachment
D0801
Patent
active
D02575116
REFERENCES:
patent: 2390950 (1945-12-01), Lanfranconi
patent: 2570945 (1951-10-01), Hawkins
patent: 2740974 (1956-04-01), Lewis
Douglas Alan P.
Motsko Donald R.
Olin Corporation
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