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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:
Click for automatic bibliography generation
Assignee:
EXXON RESEARCH ENGINEERING CO
Primary Class:
414/22.51
Other Classes:
294/104
International Classes:
E21B19/14
;
E21B19/00
View Patent Images:
Download PDF 2829783
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US Patent References:
2690847
Device for positioning pipe in a drilling derrick
2478486
Wire line guide
2470983
Support and guide for drill stems
2450934
Well pipe handling apparatus
1308593
N/A