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OPTICAL MEANS FOR CONTROLLING ACCEPTANCE ANGLE OF A PHOTORESPONSIVE DEVICE
US 3,442,191 A
Filed
: 05/27/1966
Issued
: 05/06/1969
Est. Priority Date
: 05/27/1966
Status: Expired due to Term
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Current Assignee
Donald M. Harvey
Original Assignee
Donald M. Harvey
Inventors
Harvey, Donald M.
Application Number
US04/553,432
Time in Patent Office
1,075 Days
Field of Search
US Class Current
396/50
CPC Class Codes
G03B 7/0993
in the camera
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