Drill bit

Details Drill bit Drill bit

1980-12-02

1982-12-28

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

76108A, 175374, 419 8, B21K 502, E21B 1022, E21B 1050

Patent

active

043656790

ABSTRACT:
A drill bit with cutting teeth for drilling in rock comprising:

REFERENCES:
patent: 3453719 (1969-07-01), Feenstra
patent: 3757879 (1973-09-01), Wilder et al.
patent: 4054426 (1977-10-01), White
patent: 4173457 (1979-11-01), Smith
patent: 4198233 (1980-04-01), Frehn
patent: 4274769 (1981-06-01), Multakh
patent: 4276788 (1981-07-01), van Nederveen

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