Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1984-09-18
1988-02-09
Lev, Robert
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 63, H04M 166
Patent
active
047245379
ABSTRACT:
A method and apparatus for managing an electronic radio telephone lock in which the electronic lock can be rendered operative or inoperative only by first entering a predetermined code so as to prevent unauthorized use as well as accidental or unauthorized locking, code changes, etc.
REFERENCES:
patent: 4099033 (1978-07-01), Murray
patent: 4436957 (1984-03-01), Mazza et al.
patent: 4532507 (1985-07-01), Edson et al.
Harris Corporation
Killeen Joseph M.
Lev Robert
Rogers, III L. Lawton
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