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ELECTRO-OPTICAL DEVICE HAVING VARIABLE OPTICAL DENSITY
US 3,521,941 A
Filed
: 02/07/1967
Issued
: 07/28/1970
Est. Priority Date
: 02/07/1967
Status: Expired due to Term
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Current Assignee
Deb Satyendra Kumar
,
Shaw Robert Frank
Original Assignee
Deb Satyendra Kumar
,
Shaw Robert Frank
Inventors
DEB SATYENDRA KUMAR
,
SHAW ROBERT FRANK
Application Number
US04/622,862
Time in Patent Office
1,267 Days
Field of Search
US Class Current
359/275
CPC Class Codes
B41M 5/20
using electric current B41M...
G02F 1/1524
Transition metal compounds
G02F 1/1533
structural features not oth...
G02F 2001/1536
additional, e.g. protective...
H04N 3/10
by means not exclusively op...
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