Machines not elsewhere specified – Material working – abrading – or founding machinery – Abrading
Patent
1992-04-06
1993-08-17
Douglas, Alan P.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Abrading
D15125
Patent
active
D03384748
REFERENCES:
patent: D229956 (1974-01-01), Snyder
patent: 4872290 (1989-10-01), Jenkinson et al.
Davis Antoine D.
Douglas Alan P.
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