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PHOTOCHROMIC DISPLAY USING CATHODE RAY TUBE
US 3,519,742 A
Filed
: 02/25/1964
Issued
: 07/07/1970
Est. Priority Date
: 02/25/1964
Status: Expired due to Term
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Current Assignee
Harley L. Bjelland
Original Assignee
Harley L. Bjelland
Inventors
Bjelland, Harley L.
Application Number
US04/347,181
Time in Patent Office
2,324 Days
Field of Search
US Class Current
348/780
CPC Class Codes
G01S 7/04
Display arrangements
G03B 21/001
Slide projectors
H04N 5/7425
the modulator being a diele...
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