2-pin connector socket and plug Designer (Person) Unknown Manufacturer Ward and Goldstone Date 1930 - 1939 (circa)
Switch component Designer (Organisation) Ward and Goldstone Manufacturer Ward and Goldstone Date 1920 - 1960 (circa)
Bayonet 2-bulb adapter Designer (Organisation) Ward and Goldstone Manufacturer Ward and Goldstone Date 1940 (circa)