Title:
KEYBOARD ORGANIZATION
United States Patent 3447414


Inventors:
Duca, Thomas S. LO.
Application Number:
US3447414DA
Publication Date:
06/03/1969
Filing Date:
11/04/1966
Assignee:
Thomas, Duca S. LO.
Primary Class:
Other Classes:
84/439
International Classes:
G10C3/12; (IPC1-7): G10C3/12
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US Patent References:
Foreign References:
GB286186A1928-03-01