Machines not elsewhere specified – Material working – abrading – or founding machinery – Abrading
Patent
1988-09-29
1992-01-21
Dunkins, Bruce W.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Abrading
Patent
active
D03233316
REFERENCES:
patent: D119639 (1940-03-01), Ringsrub
patent: D121245 (1940-06-01), Hollengreen et al.
patent: D309147 (1990-07-01), Kronthaler
Davis Antonie D.
Dunkins Bruce W.
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