Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment
Patent
1991-01-04
1993-06-01
Douglas, Alan P.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Element or attachment
Patent
active
D03360946
REFERENCES:
patent: D184659 (1959-03-01), Blum
patent: D234624 (1975-03-01), Adolfsson
patent: D291087 (1987-07-01), Salmi et al.
patent: 3534573 (1970-10-01), Hall et al.
Davis Antoine D.
Douglas Alan P.
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