Telephonic communications – Supervisory or control line signaling – Substation originated
Patent
1986-04-21
1987-04-28
Rubinson, Gene Z.
Telephonic communications
Supervisory or control line signaling
Substation originated
379355, H04M 123
Patent
active
046619763
ABSTRACT:
An automatic telephone dialer device comprising, in combination:
REFERENCES:
patent: 3988550 (1976-10-01), Ts'ao
patent: 4029908 (1977-06-01), Moseley et al.
patent: 4431870 (1984-02-01), May et al.
MFB Enterprises, Inc.
Rubinson Gene Z.
Schuster David R.
Silber Siegmar
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