Cutter for well drills
United States Patent 2939684
US Patent References:
Disk for rotary-drill bits
- - 1523912

Roller-cutter drill
- - 1754848

Well bit
- - 1923488

Drill cutter
- - 2104822

Rock bit cutter
- - 2234273


Inventors:
Payne, Lyle L.
Publication Date:
06/07/1960
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Assignee:
HUGHES TOOL CO
Primary Class:
175/375
Other Classes:
175/378
International Classes:
E21B10/50; E21B10/46
US Patent References:
2533260Rotary drill bit and cutter therefor
2660405Cutting tool and method of making
2774570Roller cutter for earth drills
2774571Cone type well drill