System powered via signal on gas pipe

Details System powered via signal on gas pipe System powered via signal on gas pipe

2006-04-25

2006-04-25

Tweel, Jr., John (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C204S404000

Reexamination Certificate

active

07034704

ABSTRACT:
A system comprises a first conductor configured to receive a signal via a supply side gas pipe, a second conductor configured to receive a reference signal via a reference path, and a circuit coupled to the first conductor and the second conductor. The circuit is configured to receive the signal and the reference signal to provide power to the system.

REFERENCES:
patent: 3622489 (1971-11-01), Dumitrescu et al.
patent: 3786423 (1974-01-01), Martell
patent: 3999121 (1976-12-01), Taylor, Jr.
patent: 4384925 (1983-05-01), Stetter et al.
patent: 4438391 (1984-03-01), Rog et al.
patent: 4808292 (1989-02-01), Kessler et al.
patent: 6840084 (2005-01-01), Nikolskaya

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