| 1911612 | ||||
| 1914959 | Electric conductor wire | |||
| 1933511 | Electrical illuminating device | |||
| 1944342 | Electric socket | |||
| 2057078 | Christmas tree electric socket and support-holder | |||
| 2060115 | Electrical connecter | |||
| 2119711 | Electric light fixture | |||
| 2158852 | Electric socket | |||
| 2159064 | Electrical connector | |||
| 2238099 | Electric plug | |||
| 2245194 | Electric lamp receptacle | |||
| 2483351 | Safe incandescent lamp | |||
| 2511806 |
| GB190111071A | ||||
| FR345280A | ||||
| GB368713A | ||||
| GB395233A |