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Educational toy
US 3,315,376 A
Filed
: 07/12/1965
Issued
: 04/25/1967
Est. Priority Date
: 07/12/1965
Status: Expired due to Term
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Current Assignee
Nielsen, Ruth A.
Original Assignee
Nielsen, Ruth A.
Inventors
Nielsen, Ruth A.
Application Number
US04/475,306
Time in Patent Office
652 Days
Field of Search
US Class Current
434/160
CPC Class Codes
G09B 1/40
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