Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment
Patent
1977-12-29
1980-07-22
Burke, Wallace R.
Machines not elsewhere specified
Material working, abrading, or founding machinery
Element or attachment
D1509
Patent
active
D02560216
REFERENCES:
patent: 4084803 (1978-04-01), Beekenkamp
patent: 4155542 (1979-05-01), Jansson
Bullock B. J.
Burke Wallace R.
Littell Nelson
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