Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1992-09-02
1993-11-02
Ng, Jin F.
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 61, 379428, 379433, 379440, H04M 1100, H04M 100
Patent
active
052590194
ABSTRACT:
A curved apparatus which remains stable when placed on a substantially flat surface is shown which has a base portion with an arcuately shaped back surface capable of resting on the substantially flat surface, a hinge rotatably fixed to the base portion, and a cover secured to the hinge and rotatable therewith, to prevent rocking of the base portion when the base portion's front surface is touched while the base portion is resting on the substantially flat surface. Other devices and systems are also disclosed.
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patent: 5027394 (1991-06-01), Ono et al.
patent: 5111503 (1992-05-01), Takagi
patent: 5117073 (1992-05-01), Mischenko
patent: 5148471 (1992-09-01), Metroka et al.
patent: 5197091 (1993-03-01), Takagi et al.
Wayside Telephone, Oct. 14, 1910.
Tandy Corporation, "Cordless Electronic Telephone", Cat #43-555, Oct. 1983.
Panasonic, "Cordless Phone Model #KX-T3000", Sep. 1988.
Cumming William D.
Donaldson Richard
Eschweiler Thomas G.
Kesterson James C.
Ng Jin F.
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