Machines not elsewhere specified – Material working – abrading – or founding machinery – Molding or casting
Patent
1990-05-08
1993-11-23
Douglas, Alan P.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Molding or casting
Patent
active
D03416011
REFERENCES:
patent: D189319 (1960-11-01), Verderber
patent: 3298656 (1967-01-01), Zastrow
patent: 3353782 (1967-11-01), Zastrow
patent: 3380703 (1968-04-01), Zastrow
patent: 4544340 (1985-10-01), Hehl
patent: 4664614 (1987-05-01), De Rossi
patent: 4691906 (1987-09-01), Zastrow
Con-Tek Machine, Inc.
Davis Antoine D.
Douglas Alan P.
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