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RETRODIRECTIVE PHASE SHIFTING TRANSPONDER
US 3,480,951 A
Filed
: 05/15/1968
Issued
: 11/25/1969
Est. Priority Date
: 05/15/1968
Status: Expired due to Term
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Current Assignee
Nathan Freedman
Original Assignee
Nathan Freedman
Inventors
Freedman, Nathan
Application Number
US04/729,326
Time in Patent Office
559 Days
Field of Search
US Class Current
342/6
CPC Class Codes
G01S 13/756
using a signal generator fo...
H01Q 3/46
Active lenses or reflecting...
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