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Projection apparatus
US 2,909,097 A
Filed
: 12/04/1956
Issued
: 10/20/1959
Est. Priority Date
: 12/04/1956
Status: Expired due to Term
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172
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Current Assignee
Eugene Alden Alex
,
Harold E. Rosenberger
Original Assignee
Eugene Alden Alex
,
Harold E. Rosenberger
Inventors
EUGENE ALDEN ALEX
,
Rosenberger, Harold E.
Application Number
US03/626,249
Time in Patent Office
1,050 Days
Field of Search
US Class Current
353/31
CPC Class Codes
G03B 33/00
Colour photography, other t...
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