Title:
Touch-responsive keyboard
United States Patent 2659533


Inventors:
Quinby, Edwin J.
Oliwa, Walter S.
Application Number:
US20821651A
Publication Date:
11/17/1953
Filing Date:
01/27/1951
Assignee:
Monroe, Calculating Machine
Primary Class:
Other Classes:
235/61PE, 315/275, 327/517, 340/407.2, 340/815.75, 341/22, 345/173, 361/179, 400/479, D18/7
International Classes:
H03K17/967
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US Patent References:
Foreign References:
GB426279A1935-04-01
DE483437C1929-10-04