Machines not elsewhere specified – Agricultural or construction machinery – Drilling – mining – or soil treatment
Patent
1975-09-02
1977-05-03
Burke, Wallace R.
Machines not elsewhere specified
Agricultural or construction machinery
Drilling, mining, or soil treatment
D1504
Patent
active
D02441900
REFERENCES:
patent: 3340938 (1967-09-01), Wilson
patent: 3670831 (1972-06-01), Winter, Jr. et al.
patent: 3708024 (1973-01-01), Back
patent: 3835940 (1974-09-01), Winter, Jr.
Bowe James M.
Pearce Richard J.
Swartz Richard H.
Burke Wallace R.
Dowell Jr. A. Yates
Driltech Inc.
Gandy James M.
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