Bayko box Designer (Person) Plimpton, Charles Manufacturer Plimpton Engineering Company Date 1934 - 1967 (circa)
Egg shaped push-through switch Designer (Organisation) Crabtree Electrical Manufacturer Crabtree Electrical Date 1930 - 1949 (circa)
Philips electric knife sharpener Designer (Person) Unknown Manufacturer Philips Date 1960 - 1969 (circa)