Telephone instrument
United States Patent 2640109
US Patent References:
Telephone construction
- - 1819362
Telephone substation apparatus
- - 1981649
Telephone desk set mechanism
- - 2040311
Desk telephone set
- - 2392321
Telephone instrument
- - 2479198
Telephone construction
- - 1819362
Telephone substation apparatus
- - 1981649
Telephone desk set mechanism
- - 2040311
Desk telephone set
- - 2392321
Telephone instrument
- - 2479198
Inventors:
O'neil, Paul T.
Publication Date:
05/26/1953
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Assignee:
Connecticut, Telephone And Elec
Primary Class:
Other Classes:
379/435
International Classes:
H04M1/02