Title:
Control device for gun perforators
United States Patent 2655993


Inventors:
Lloyd, Spencer
Application Number:
US367348A
Publication Date:
10/20/1953
Filing Date:
01/22/1948
Assignee:
Thomas, Bannon C.
John, Chesnut D.
Primary Class:
Other Classes:
89/1.15, 175/4.56, 175/4.58
International Classes:
E21B43/116
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