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SURVEILLANCE EQUIPMENT AND SYSTEM
US 3,517,316 A
Filed
: 03/22/1966
Issued
: 06/23/1970
Est. Priority Date
: 03/22/1966
Status: Expired due to Term
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Current Assignee
James Robert Anderson
,
John B. Hatcher
,
Kenneth G. Anderson
Original Assignee
James Robert Anderson
,
John B. Hatcher
,
Kenneth G. Anderson
Inventors
Anderson, Kenneth G.
,
Anderson, James R.
,
Hatcher, John B.
Application Number
US04/536,324
Time in Patent Office
1,554 Days
Field of Search
US Class Current
340/525
CPC Class Codes
G01V 1/001
Acoustic presence detection
G08B 13/1663
using seismic sensing means
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