Title:
Tool joint
United States Patent 2485763
US Patent References:
Hose coupling
- - 1904061

Threadless drill stem
- - 2296198


Inventors:
James, Moon
Publication Date:
10/25/1949
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Assignee:
SIGNAL OIL & GAS CO
Primary Class:
285/86
Other Classes:
285/112, 285/313
International Classes:
E21B17/04; E21B17/02