Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment
Patent
1977-10-28
1980-06-24
Feldman, Peter
Machines not elsewhere specified
Material working, abrading, or founding machinery
Element or attachment
D 8 72, 82 41, D1509
Patent
active
D02555786
REFERENCES:
patent: 818454 (1906-04-01), Krus
patent: 1560091 (1925-11-01), Nygren
patent: 2473643 (1949-06-01), Froblom
patent: 2747451 (1956-05-01), Button
Feldman Peter
Hobbs Marmaduke A.
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