Title:
System for shooting wells by radio
United States Patent 1757288

Inventors:
Bleecker, Warren F.
Publication Date:
05/06/1930
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Assignee:
Bleecker, Warren F.
Primary Class:
102/322
Other Classes:
175/2, 200/214, 89/1.150
International Classes:
F42D1/05; F42D1/00