Title:
Device for positioning a section of drill pipe in a drilling derrick
United States Patent 2829783
Inventors:
Leon, Blagg
Publication Date:
04/08/1958
Export Citation:
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Assignee:
EXXON RESEARCH ENGINEERING CO
Primary Class:
414/22.51
Other Classes:
294/104
International Classes:
E21B19/14; E21B19/00
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US Patent References:
2690847Device for positioning pipe in a drilling derrick
2478486Wire line guide
2470983Support and guide for drill stems
2450934Well pipe handling apparatus
1308593N/A