Title:
Well perforating apparatus
United States Patent 2981185


Inventors:
Caldwell, Blake M.
Application Number:
US65033457A
Publication Date:
04/25/1961
Filing Date:
04/03/1957
Assignee:
JET RES CT INC
Primary Class:
Other Classes:
89/1.15, 166/55, 175/4.6
International Classes:
E21B43/117; F42B3/02
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US Patent References:
Foreign References:
GB701074A1953-12-16