Device for positioning a section of drill pipe in a drilling derrick
United States Patent 2829783
US Patent References:
/1308593.html
- - 1308593
Well pipe handling apparatus
- - 2450934
Support and guide for drill stems
- - 2470983
Wire line guide
- - 2478486
Device for positioning pipe in a drilling derrick
- - 2690847
/1308593.html
- - 1308593
Well pipe handling apparatus
- - 2450934
Support and guide for drill stems
- - 2470983
Wire line guide
- - 2478486
Device for positioning pipe in a drilling derrick
- - 2690847
Inventors:
Leon, Blagg
Publication Date:
04/08/1958
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Export Citation:
Assignee:
EXXON RESEARCH ENGINEERING CO
Primary Class:
Other Classes:
294/104
International Classes:
E21B19/14; E21B19/00