| Patents for H01H 36 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding (3,817) |
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| 05/13/1980 | CA1077596A1 Back-up alarm having a modular construction |
| 05/06/1980 | US4201489 Keyboard actuatable with the aid of the fingers of at least one hand |
| 04/22/1980 | US4199741 Moving magnet, rotary switch |
| 03/11/1980 | US4193023 Electronic monitoring system with low energy consumption in quiescent state |
| 03/04/1980 | US4191951 Device for sensing fluid forces |
| 02/19/1980 | US4188739 Magnetic switch adjusting system |
| 02/06/1980 | EP0007763A1 Float operated electrical switch assembly |
| 02/05/1980 | US4187483 Multi-throw magnetic reed switch |
| 01/29/1980 | US4186419 Apparatus for monitoring and controlling liquid level |
| 01/29/1980 | US4186362 Switch |
| 01/22/1980 | US4185260 Externally-programable switch |
| 12/04/1979 | US4176586 Piston and cylinder device |
| 11/27/1979 | US4176264 Linear programmer for an actuator |
| 11/13/1979 | CA1066425A1 Continuous ionization injector for low pressure gas discharge device |
| 10/02/1979 | CA1063652A1 Switch actuating hinge |
| 09/18/1979 | US4168413 Piston detector switch |
| 09/11/1979 | CA1062093A1 Differential pressure indicating device |
| 08/28/1979 | US4165935 Differential float control |
| 08/21/1979 | US4165501 Position sensing system |
| 07/24/1979 | US4162469 Coaxial switch with magnetic locking |
| 07/17/1979 | US4161685 Solid state proximity switch |
| 07/17/1979 | US4161659 Solid state proximity switch |
| 07/03/1979 | CA1057801A1 Electromagnetically operated switch with a permanent magnet armature |
| 06/27/1979 | EP0002609A1 A system controlling apparatus |
| 06/27/1979 | EP0002608A1 Sensing transducer |
| 05/29/1979 | US4156820 Miniature contactless switching unit |
| 04/17/1979 | US4150350 Magnetic switch |
| 03/06/1979 | CA1050089A1 Reed switches and process for making them |
| 02/27/1979 | US4142168 Switch construction |
| 02/27/1979 | US4142079 Float-level switch with lifting mechanism |
| 02/27/1979 | CA1049285A1 Liquid-level sensor utilizing ferromagnetic fluid |
| 02/06/1979 | US4137940 Liquid flow control apparatus |
| 01/30/1979 | USRE29896 Intrusion detection system |
| 12/05/1978 | US4128823 Magnetic electrodes |
| 11/28/1978 | CA1043398A1 Bistable switch comprising strip contacts |
| 11/07/1978 | US4124111 Coin inspecting apparatus |
| 10/17/1978 | US4121204 Bar graph type touch switch and display device |
| 10/10/1978 | CA1040268A1 Magnetic field sensing apparatus |
| 10/03/1978 | US4118098 Connector for reed switches |
| 10/03/1978 | CA1039808A1 High energy gas discharge switching device |
| 09/26/1978 | US4117431 Magnetic proximity device |
| 09/26/1978 | US4117430 Keyboard switch |
| 09/05/1978 | US4112401 Electrical switching apparatus and control system for use therewith |
| 09/05/1978 | US4112272 Valve and switch device for measuring pressure of liquids in living objects |
| 09/05/1978 | CA1038055A1 Coin arrival sensor using inductive colls |
| 09/05/1978 | CA1038020A1 Toner level detector |
| 07/25/1978 | US4103265 Fluid bilevel sensor |
| 07/18/1978 | US4101857 Externally-programable switch |
| 06/27/1978 | US4097802 Magnetoresistive field sensor with a magnetic shield which prevents sensor response at fields below saturation of the shield |
| 05/30/1978 | US4092640 Key input means having a switching element made of a light emitting diode |
| 05/30/1978 | US4091908 Coin checking device for a vending machine |
| 05/23/1978 | US4091250 Electro-mechanical liquid level sensor |
| 05/16/1978 | US4090092 Shielding arrangement for a capacitive touch switch device |
| 05/16/1978 | US4090050 Electro-mechanical liquid level sensor |
| 05/09/1978 | US4088857 Back-up alarm having a modular construction |
| 04/25/1978 | US4086456 Mounting for magnetic switch |
| 04/04/1978 | US4082960 Pneumatically operated pressure switch, particularly for vehicle tire supervision |
| 04/04/1978 | US4082930 Liquid level sensor |
| 03/28/1978 | US4081639 Liquid-level float switch construction |
| 03/28/1978 | US4081068 Keyboard actuable with the aid of the fingers of at least one hand |
| 03/14/1978 | US4079360 Magnetic field sensing apparatus |
| 02/21/1978 | US4075588 Switching apparatus |
| 02/07/1978 | US4072917 Switch actuating hinge |
| 01/31/1978 | US4071725 Proximity switch for fluid cylinders |
| 01/17/1978 | US4069405 Swimming pool alarm system |
| 01/03/1978 | US4066858 Vertical float switch |
| 12/27/1977 | US4065677 Electrically controlled switching device |
| 12/20/1977 | US4064451 Hysteresis compensated reed switch assembly for a position indicating system |
| 12/13/1977 | US4063229 Article surveillance |
| 11/29/1977 | US4059956 Touch type contactless switch structure for electronic wristwatches having insulative member precluding establishment of shunt path by foreign matter |
| 11/08/1977 | US4057773 Magnetic switch |
| 11/08/1977 | US4057700 Fluid level indicator |
| 10/18/1977 | US4054861 Pulsing type hall effect rotary switch |
| 08/09/1977 | US4041427 Reed switching opening and closing device |
| 08/02/1977 | US4039985 Magnetic reed switch |
| 07/26/1977 | US4038620 Magnetic reed switch |
| 07/19/1977 | US4036827 Conductive liquid switches |
| 07/05/1977 | US4034337 Vehicle alarm apparatus |
| 06/14/1977 | US4029042 Differential pressure indicator device |
| 05/31/1977 | US4027278 Sealed permanent magnet switch |
| 05/24/1977 | US4025885 Sealed permanent magnet switch |
| 04/19/1977 | US4019171 Safety lighting system |
| 03/29/1977 | US4015226 Cartridge for magnetically operated contacts |
| 01/04/1977 | US4001744 Electrical switch |
| 01/04/1977 | US4001533 Sealed level control switch for sump pumps |
| 01/04/1977 | US4000651 Liquid level indicator |
| 12/21/1976 | US3999156 Bistable magnetic switch comprising strip contacts |
| 12/14/1976 | US3997744 Liquid level detector |
| 10/12/1976 | US3986183 Burglar alarm |
| 09/21/1976 | US3982217 Pressure-operated switch |
| 09/21/1976 | US3982087 Liquid-level indicating means |
| 09/14/1976 | US3980980 Switching device |
| 09/14/1976 | US3980979 Magnetically operated switch unit |
| 08/24/1976 | US3976962 Dual threshold magnetic proximity switch |
| 08/17/1976 | US3974795 Differential pressure indicating device |
| 08/10/1976 | US3974469 Permanent magnet biasing means for reed switches |
| 06/29/1976 | US3967224 Coated magnetically biased reed switch |
| 06/15/1976 | US3963960 Bipolar crossed-field switch tube and circuit |
| 06/15/1976 | US3963906 Compact electronic calculator |
| 05/18/1976 | US3958202 Positional transducer utilizing magnetic elements having improved operating characteristics |