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| Number | Title | Issue Date |
| 4153922 | Relay control circuit A relay control circuit is disclosed in which a timer circuit is actuated by a reference clock pulse in synchronism with an AC voltage supplied by a commercial power supply. An output signal of the timer circuit causes current to flow in the coil of the r... | 05/08/1979 |
| 4142375 | Control apparatus for air conditioning unit An automatic control apparatus for protecting the compressor motor used with the refrigeration system of an air conditioning unit. The control apparatus has a timer for prohibiting the restart of the compressor motor until the lapse of a predetermined tim... | 03/06/1979 |
