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Your search returned 20 patents.
( 340/3.53 in Current US Classification ) |
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| Patent ID | Title | Date Filed |
| 6683526 | Pager-based communications system
| February 27, 2001 |
| 6167046 | Communication method, communication system and computer readable recording medium recording communication program
| January 9, 1998 |
| 5818334 | Addressable devices with interface modules having electrically readable addresses
| February 3, 1995 |
| 5805073 | Apparatus for connecting electric appliances
| February 25, 1993 |
| 5717385 | Field bus system and virtual field apparatus
| January 6, 1995 |
| 5486817 | Communication system for vehicle control system having presettable initial state
| July 26, 1993 |
| 5467078 | System and method for communicating data between plural air conditioning machines for controlling the machines and displaying their status
| April 15, 1993 |
| 5388091 | Communications system for communications between an electronic control apparatus and a test apparatus
| April 13, 1993 |
| 5122948 | Remote terminal industrial control communication system
| June 28, 1990 |
| 5054995 | Apparatus for controlling a fluid compression system
| November 6, 1989 |
| 4939505 | Monitoring and warning system for series-fed runway visual aids
| July 18, 1988 |
| 4903016 | Communication control unit
| July 5, 1988 |
| 4768202 | Signalling method and device for bidirectional digital transmission link
| April 8, 1986 |
| 4156866 | Multiple remote terminal digital control system
| February 28, 1978 |
| 4131882 | Digital two-wire irrigation control system with feedback
| December 29, 1975 |
| 4086568 | Modular I/O equipment for controlling field devices directly or as an interface
| April 7, 1975 |
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