Drill bit finger

Details Drill bit finger Drill bit finger

1995-06-07

1997-10-14

Davis, Antoine Duval

Machines not elsewhere specified

Material working, abrading, or founding machinery

Element or attachment

1509

Patent

active

D03849627

REFERENCES:
patent: D220920 (1971-06-01), Cochran
patent: 2068704 (1937-01-01), Powell
patent: 2345699 (1944-04-01), Camp
patent: 2358466 (1944-09-01), Miller
patent: 2640546 (1953-06-01), Baker
patent: 2842343 (1958-07-01), Church et al.
patent: 3437159 (1969-04-01), Link et al.
patent: 3603411 (1971-09-01), Link
patent: 3603413 (1971-09-01), Grill et al.
patent: 3692126 (1972-09-01), Rushing et al.
patent: 3955633 (1976-05-01), Bowles
patent: 4281722 (1981-08-01), Tucker et al.
patent: 4497382 (1985-02-01), Nenkov
patent: 4770253 (1988-09-01), Hallissy et al.
patent: 4828023 (1989-05-01), Leggett
PCT/SU89/00123; Feb. 1990; Grigorievich.

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