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Apparatus and method for communication through the sense of touch
US 2,972,140 A
Filed
: 09/23/1958
Issued
: 02/14/1961
Est. Priority Date
: 09/23/1958
Status: Expired due to Term
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Current Assignee
Joseph Hirsch
Original Assignee
Joseph Hirsch
Inventors
Hirsch, Joseph
Application Number
US03/762,727
Time in Patent Office
875 Days
Field of Search
US Class Current
340/407.2
CPC Class Codes
G09B 21/04
Devices for conversing with...
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