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Apparatus for testing light discrimination
US 2,916,963 A
Filed
: 03/31/1955
Issued
: 12/15/1959
Est. Priority Date
: 04/03/1954
Status: Expired due to Term
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Current Assignee
Maarten A. Bouman
Original Assignee
Maarten A. Bouman
Inventors
Bouman, Maarten A.
Application Number
US03/498,394
Time in Patent Office
1,720 Days
Field of Search
US Class Current
351/243
CPC Class Codes
A61B 3/066
for testing colour vision
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