| 2786111 | Electrostatic relay | |||
| 2466053 | Starting relay for fluorescent lamps | |||
| 2419111 | Electrostatic relay | |||
| 2365738 | Relay | |||
| 2269442 | Thermally responsive gas-discharge device | |||
| 2201879 | Delay type piezoelectric relay | |||
| 2175354 | Electrostatic relay | |||
| 2066211 | Electron contact relay | |||
| 1834786 | Electrical control means | |||
| 1605911 | Electrostatic apparatus | |||
| 1446748 | N/A | |||
| 0749775 | N/A |
| GB201679A |