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Variable polarizing color filter
US 2,493,200 A
Filed
: 05/31/1946
Issued
: 01/03/1950
Est. Priority Date
: 05/31/1946
Status: Expired due to Term
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Current Assignee
Edwin H. Land
Original Assignee
Edwin H. Land
Inventors
Land, Edwin H.
Application Number
US02/673,405
Time in Patent Office
1,313 Days
Field of Search
US Class Current
359/250
CPC Class Codes
G02B 27/288
Filters employing polarisin...
G02B 5/3033
in the form of a thin sheet...
G02F 1/23
for the control of the colo...
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