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Pneumatic tube signal system
US 3,361,384 A
Filed
: 09/29/1966
Issued
: 01/02/1968
Est. Priority Date
: 09/29/1966
Status: Expired due to Term
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Current Assignee
Translogic Corporation
(Midea Group Co., Ltd)
Original Assignee
David H. Thorburn
Inventors
Thorburn, David H.
Application Number
US04/582,802
Time in Patent Office
460 Days
Field of Search
US Class Current
406/5
CPC Class Codes
B65G 51/44
without mechanical contact ...
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