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US 3,477,404 A
Filed
: 02/07/1968
Issued
: 11/11/1969
Est. Priority Date
: 02/07/1968
Status: Expired due to Term
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Current Assignee
Clifford C. Robinson
Original Assignee
Clifford C. Robinson
Inventors
Robinson, Clifford C.
Application Number
US04/703,777
Time in Patent Office
643 Days
Field of Search
US Class Current
116/308
CPC Class Codes
G09F 11/23
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