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Acoustical firing indicator
US 2,925,582 A
Filed
: 02/18/1957
Issued
: 02/16/1960
Est. Priority Date
: 02/22/1956
Status: Expired due to Term
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0
Petitions
16
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Current Assignee
Jean Blaise
,
Jean I. Mattei
,
Rene Manganne
Original Assignee
Jean Blaise
,
Jean I. Mattei
,
Rene Manganne
Inventors
Mattei, Jean I.
,
Blaise, Jean
,
RENE MANGANNE
Application Number
US03/640,954
Time in Patent Office
1,093 Days
Field of Search
US Class Current
367/128
CPC Class Codes
F41G 3/142
based on observation of a f...
F41J 5/06
Acoustic hit-indicating sys...
F41J 5/12
for indicating the distance...
G01V 1/001
Acoustic presence detection
Y10S 367/906
Airborne shock-wave detection
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