Wooden plug and socket

Wooden plug and socket patented by Killingworth He

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Wooden plug and socket patented by Killingworth He
Science Museum Group
© The Board of Trustees of the Science Museum

Wooden plug and socket patented by Killingworth Hedges 1880

Details

Category:
Electricity Supply
Object Number:
1985-953
type:
electric sockets
credit:
Delta Metal Co.