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METHOD AND APPARATUS FOR COLOR ADJUSTING IN PHOTOGRAPHIC PRINTING
US 3,529,519 A
Filed
: 04/11/1968
Issued
: 09/22/1970
Est. Priority Date
: 04/11/1968
Status: Expired due to Term
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Current Assignee
Heath Company
Original Assignee
Robert W. Mitchell
Inventors
Mitchell, Robert W.
Application Number
US04/720,705
Time in Patent Office
894 Days
Field of Search
US Class Current
356/421
CPC Class Codes
G01N 21/293
with colour charts, graduat...
G03B 27/72
Controlling or varying ligh...
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