Title:
Pipe retainer for oil wells
United States Patent 1802565


Inventors:
Lacey, Joseph S.
Application Number:
US38023829A
Publication Date:
04/28/1931
Filing Date:
07/22/1929
Assignee:
Lacey, Joseph S.
Primary Class:
Other Classes:
137/560, 166/55, 166/75.14, 166/95.1, 251/1.1
International Classes:
E21B29/00; E21B33/04
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