| Patents for H04Q 9 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom (14,096) |
|---|
| 07/11/1978 | US4099668 Monitoring circuit |
| 07/04/1978 | US4099163 Method and apparatus for digital data transmission in television receiver remote control systems |
| 07/04/1978 | US4099157 Single wire power/signal system for vehicle auxiliary devices |
| 06/06/1978 | US4093946 Two-wire, multiple-transducer communications system |
| 05/23/1978 | US4091328 Remote control radio system |
| 05/23/1978 | US4091273 Electro-optical switching system |
| 05/09/1978 | US4088983 Electronic polling and calling communication system |
| 05/02/1978 | US4087793 Digital electronic control and switching arrangement |
| 04/25/1978 | US4086569 Communication systems |
| 04/25/1978 | US4086568 Modular I/O equipment for controlling field devices directly or as an interface |
| 04/18/1978 | US4085403 Combined on-board remote control energy supply distribution and signaling system, particularly for automotive vehicles |
| 04/18/1978 | US4085334 Electronic system for process instrumentation and control |
| 03/14/1978 | US4079414 Interrogated transponder system |
| 03/07/1978 | US4078236 Remote switching apparatus |
| 03/07/1978 | US4078196 Digital valve and pump control system |
| 03/07/1978 | US4077566 Night setback-morning ready control system for unit ventilators |
| 02/28/1978 | US4077011 Uncertain interval timer using a variable length shift register |
| 02/21/1978 | US4075607 System for collecting data from meters placed at remote places |
| 02/14/1978 | US4074242 Point selection and display system |
| 02/07/1978 | US4072898 Remote control radio system |
| 01/31/1978 | US4071908 Adaptive polling technique |
| 01/24/1978 | US4070650 Digital signal transmission system and equipment |
| 01/24/1978 | US4070609 Automatic control system |
| 01/17/1978 | US4069488 Computer controlled distribution apparatus for distributing transactions to and from controlled machines tools |
| 01/10/1978 | US4067793 Automatic remote control system for mercury cells for the production of chlorine and caustic soda |
| 01/03/1978 | US4067000 Remote control transmitter with an audible battery life indicator |
| 12/20/1977 | US4064485 Digital load control circuit and method for power monitoring and limiting system |
| 12/20/1977 | US4064367 Dual tone selector with answerback signalling |
| 11/01/1977 | US4056763 Device for controlling a mechanical element with effort return |
| 11/01/1977 | US4056738 Threshold circuit |
| 10/25/1977 | US4055835 Line-seizing apparatus |
| 10/25/1977 | US4055772 Digitally coded electrical supply system |
| 10/11/1977 | US4053894 Radio signal switching system employing dielectric rod antennas |
| 10/04/1977 | US4052700 Remote control receiver |
| 09/27/1977 | US4050256 Mine roof support control systems |
| 09/13/1977 | US4048620 Central station to addressed point communication system |
| 09/13/1977 | US4048540 Electronic flash unit serving both as transmitter of a remote control and flash unit for flash photography |
| 09/06/1977 | US4047155 Universal data recording system |
| 08/30/1977 | US4045777 Remote control transmitter and receiver for use with a television receiver |
| 08/23/1977 | US4043180 Gathering line leak detection system tester |
| 08/16/1977 | US4042821 Remote control light receiver |
| 07/19/1977 | US4037219 Meter dial encoder for remote meter reading |
| 07/12/1977 | US4035772 Utility meter reading system |
| 07/12/1977 | US4035771 Process for the remote transmission and indication of electrical measured values in electrolysis cells |
| 07/12/1977 | US4035707 Reversible mechanical remote-control device |
| 07/05/1977 | US4034300 Circuit arrangement for evaluating received oscillations of a predetermined frequency |
| 07/05/1977 | US4033202 Speed responsive electronic controls for transmissions |
| 06/21/1977 | US4031513 RF data exchange system |
| 06/21/1977 | US4031323 Remote controllable telephone answering device having a dual playback capability |
| 06/07/1977 | US4028620 Electrical wiring system for selectively actuating electrical loads |
| 05/31/1977 | US4027286 Multiplexed data monitoring system |
| 05/17/1977 | US4024502 Device for remote control of electrical power units |
| 05/17/1977 | US4024348 Remote controllable automatic telephone answering apparatus |
| 05/10/1977 | US4023105 Counter type remote control receiver producing binary outputs correlated with numerical commands of a companion remote control transmitter |
| 05/03/1977 | US4021615 Apparatus for conserving energy in a building |
| 04/19/1977 | US4019181 Transponder system |
| 04/19/1977 | US4019172 Central supervisory and control system generating 16-bit output |
| 03/29/1977 | US4015136 Electrical systems for road vehicles |
| 02/22/1977 | US4009394 Remote control light transmitter employing a cylindrical lens |
| 02/08/1977 | US4007458 Digital two-wire irrigation control system |
| 02/08/1977 | US4007360 Method and apparatus for remote transmission of signals |
| 01/18/1977 | US4004276 Telephone answering machines |
| 12/21/1976 | US3999060 Device for receiver for optical signals |
| 12/07/1976 | US3996553 Seismic data telemetering system |
| 12/07/1976 | US3996430 Keyboard switch assembly having multilayer printed circuit structure |
| 10/19/1976 | US3987414 Digital remote control for electronic signal receivers |
| 10/12/1976 | US3985962 Method of information transmission with priority scheme in a time-division multiplex communication system comprising a loop line |
| 09/14/1976 | US3980956 Counter type remote control receiver including noise immunity system |
| 09/14/1976 | US3980954 Bidirectional communication system for electrical power networks |
| 09/07/1976 | US3979744 Circuit arrangement for the digital control of operating functions via sensor electrodes, especially in radio and television receivers |
| 08/03/1976 | US3973241 Information transmission system |
| 08/03/1976 | US3973170 Intrinsic safety barrier |
| 07/27/1976 | US3971986 Remote control system for radio receiver |
| 07/27/1976 | US3971885 Remote control system for passenger conveyors |
| 07/13/1976 | US3969664 Monitor systems |
| 07/06/1976 | US3968477 Control apparatus for electrical devices |
| 06/22/1976 | US3965366 Electrical devices control system |
| 06/15/1976 | US3964023 Method of and apparatus for selectively controlling a plurality of remotely located loads |
| 06/01/1976 | US3961281 Digital control system |
| 05/11/1976 | US3956590 Switching arrangement for switching between different current values by means of mechanical or electronic switches |
| 04/27/1976 | US3953832 Remote control of broadcast receivers |
| 04/27/1976 | US3952944 Device for automatically monitoring the operating states of controlled objects in a sequence control system |
| 04/20/1976 | US3952287 Data detection system |
| 04/20/1976 | US3952286 Time multiplexed electric wiring system for control and monitoring of field points |
| 04/13/1976 | US3950728 Coded carrier remote control system |
| 04/06/1976 | US3949403 Remote power control apparatus |
| 04/06/1976 | US3949297 Information signal transmitting system |
| 03/23/1976 | US3946380 Remote supervision and control system |
| 03/23/1976 | US3946362 Time division multiple transmission control apparatus |
| 03/23/1976 | US3946311 Air core gauge with expanded pointer range |
| 03/16/1976 | US3944982 Remote control system for electric apparatus |
| 03/16/1976 | US3944981 Electrical wiring system |
| 03/16/1976 | US3944975 Signal checking system |
| 03/09/1976 | US3943488 Multiplex telemetering system |
| 03/02/1976 | US3942168 Distribution network power line communication system |
| 02/10/1976 | US3937890 Remote monitoring communication system and terminal for utility meters |