Machines not elsewhere specified – Material working – abrading – or founding machinery – Abrading
Patent
1976-04-01
1978-04-04
Douglas, Alan P.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Abrading
D1509
Patent
active
D02476720
REFERENCES:
patent: D232471 (1974-08-01), Sandstrom
patent: 2019205 (1935-10-01), Waldron
Douglas Alan P.
Holman Emmette R.
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