| Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232) |
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| 11/02/1976 | US3989962 Negative-resistance semiconductor device |
| 10/26/1976 | US3988640 A.C. protective circuit |
| 10/26/1976 | US3988639 Low power synchronous motor and line cord therefor |
| 10/19/1976 | US3987342 Protective circuit utilizing multilevel power supply output |
| 09/21/1976 | US3982158 Power distribution control system |
| 09/14/1976 | US3980931 Over voltage protector |
| 09/07/1976 | US3979645 Protective circuit for short-circuit and overload protection of a power circuit |
| 09/07/1976 | US3979644 Overvoltage protection arrangement |
| 09/07/1976 | US3979642 Electronic protective circuit |
| 08/17/1976 | US3975664 Line protector for communication circuit |
| 08/03/1976 | US3973224 Tandem configuration for EMP protection |
| 08/03/1976 | US3973170 Intrinsic safety barrier |
| 07/20/1976 | US3970900 Overvoltage protection for an integrated circuit |
| 07/06/1976 | US3968411 Transmitter-receiver protection device |
| 07/06/1976 | US3968407 Redundant intrinsic safety barrier |
| 06/08/1976 | US3962715 Niobium oxide |
| 06/01/1976 | US3961225 Surge absorber |
| 05/18/1976 | US3957329 Fault-current limiter for high power electrical transmission systems |
| 05/04/1976 | US3955132 Intrinsically safe power supply apparatus |
| 04/06/1976 | US3949271 Transient absorber circuit for regulated power supplies |
| 03/30/1976 | US3947726 Reverse voltage surge protection for high-voltage thyristors |
| 03/30/1976 | US3946738 Leakage current cancelling circuit for use with electrosurgical instrument |
| 03/23/1976 | US3946375 Redundant DC power supply for analog computers and the like |
| 03/23/1976 | US3946278 Fail-safe four leaded zener diode arrangement |
| 03/09/1976 | US3943427 Apparatus for protecting the thyristors of a high-voltage controlled converter from overvoltage |
| 02/17/1976 | US3939363 Circuitry with zener diode voltage surge suppressor connected to serve as half wave rectifier |
| 02/10/1976 | US3938000 Lamp driver for telephone panel indicator lamps |
| 01/27/1976 | US3935511 Current inrush limiter |
| 01/27/1976 | US3935471 Current limiting power supply |
| 01/20/1976 | US3934175 Power surge protection system |
| 01/06/1976 | US3931577 Radio receiver protection arrangement |
| 01/06/1976 | US3931546 Over-voltage protection circuit |