Title:
Uni-directional ultrasonic transducer
United States Patent 2972068


Inventors:
Howry, Douglass H.
Posakony, Gerald J.
Application Number:
US59620356A
Publication Date:
02/14/1961
Filing Date:
07/06/1956
Assignee:
AUTOMATION INSTR INC
Primary Class:
Other Classes:
310/337, 367/162
International Classes:
G10K11/16
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