Utility meter reading system using telephone line

Details Utility meter reading system using telephone line Utility meter reading system using telephone line

1974-07-25

1976-06-08

Claffy, Kathleen H.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340152R, H04M 1100

Patent

active

039625451

ABSTRACT:
A plurality of remote terminals are each connected to different pluralities of gas or electric meters or the like which are close together such as in an apartment building complex. The remote terminals communicate with a central terminal over a single public telephone line. The central terminal transmits an interrogation signal to the remote terminals over the telephone line, which then transmit the meter readings over the telephone line to the central terminal for recording.

REFERENCES:
patent: 3113176 (1963-12-01), Doktor et al.
patent: 3754215 (1973-08-01), Blomenkamp
patent: 3842206 (1974-10-01), Barsellotti et al.
patent: R26331 (1968-01-01), Brothman et al.

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