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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US3987246May 19, 1975Oct 19, 1976Electromitor, Inc.Apparatus for automatically sending data over a telephone system from a remote station to a central station
US3992587Aug 19, 1974Nov 16, 1976National Data CorporationRemote data line monitor
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US4051327Apr 30, 1976Sep 27, 1977Pan-X CorporationTelephone alarm system
US4086434Sep 7, 1976Apr 25, 1978Leo P. ChristiansenRemote condition reporting system
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US4338493Jun 25, 1980Jul 6, 1982Siemens AktiengesellschaftMethod and devices for reporting emergency calls and for initiating emergency assistance measures
US4412292Feb 17, 1981Oct 25, 1983The Coca-Cola CompanySystem for the remote monitoring of vending machines
US4455453Dec 23, 1980Jun 19, 1984Metretek, IncorporatedApparatus and method for remote sensor monitoring, metering and control
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US4628313Sep 12, 1984Dec 9, 1986TeleMeter CorporationApparatus and method for remotely monitoring a utility meter by use of a liquid crystal display
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US4665544Sep 4, 1985May 12, 1987Mitsubishi Denki Kabushiki KaishaHome control system and interphone system
US4680704Dec 28, 1984Jul 14, 1987TeleMeter CorporationOptical sensor apparatus and method for remotely monitoring a utility meter or the like
US4716582Sep 16, 1986Dec 29, 1987Phonetics, Inc.
Wisconsin Bell, Inc.		Digital and synthesized speech alarm system
US4728950Jan 31, 1985Mar 1, 1988TeleMeter CorporationMagnetic sensor apparatus for remotely monitoring a utility meter or the like
US4817131Jun 20, 1986Mar 28, 1989Badger Meter, Inc.Automatic meter reading system
US4845486Sep 12, 1986Jul 4, 1989Robert ScullyResidential fuel-oil level reporting and alarm system
US4881070Mar 22, 1989Nov 14, 1989Energy Innovations, Inc.Meter reading methods and apparatus
US5335267Aug 28, 1992Aug 2, 1994Autotrol CorporationApparatus and method for transmitting text data directly to a facsimile machine
US5434911Jun 4, 1993Jul 18, 1995M & FC Holding Company, Inc.Call in-bound remote reading and data collection system
US5454031Mar 8, 1995Sep 26, 1995M & FC Holding Company, Inc.Dial inbound meter interface unit which derives its power from a telephone line
US5469365Jan 25, 1993Nov 21, 1995Customs Ideas
CPM		Power monitor unit
US5619560Jun 5, 1995Apr 8, 1997Scully Signal CompanyResidential fuel oil tank level reporting device
US6240295Jun 5, 1998May 29, 2001@Track Communications, Inc.Data messaging in a communications network using a feature request
US6295449Mar 19, 1998Sep 25, 2001@Track Communications, Inc.Data messaging in a communications network using a feature request
US7940901Nov 5, 2004May 10, 2011Remote management of products and services

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