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CINEMA SYSTEM UTILIZING A DEEPLY CURVED SCREEN AND A MASK FOR PROVIDING AN ILLUSION
US 3,475,086 A
Filed
: 02/10/1966
Issued
: 10/28/1969
Est. Priority Date
: 02/10/1966
Status: Expired due to Term
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Current Assignee
Richard H. Vetter
Original Assignee
Richard H. Vetter
Inventors
Vetter, Richard H.
Application Number
US04/526,581
Time in Patent Office
1,356 Days
Field of Search
US Class Current
352/69
CPC Class Codes
G02B 1/00
Optical elements characteri...
G03B 21/00
Projectors or projection-ty...
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