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Maker of portable electrical appliances, of Birmingham
of Fallings Park Works, Wolverhampton and 83 Upper Thames Street, London, EC
1903 Company established. The name was taken from the initials (F and M) of the two directors.
1911 Incorporated as a limited company.
1911 The Efandem Co Ltd moved from Birmingham to new premises at Park Lane, Wolverhampton. The company produced a wide range of electrical goods including batteries, torches, hand lanterns, searchlights, sirens, car and bicycle lighting sets, hand lamps, torch cases, bells, buzzers, and friction clutches for machinery .
1913 Fallings Park Works were doubled in size. Making pocket lamps, torches, hand lamps, batteries. Rapid increase in demand for dynamo lighting sets for cars
1914 Electrical and mechanical engineers and manufacturers. Specialities: dynamo lighting outfits for motor cars, motor boats etc., electric pocket lamps, lanterns and flash batteries, dry cells, electric bells of all kinds, sheet metal works etc. Employees 475. 
WW1: production was concentrated on the war effort producing items such as torches, torch batteries, searchlights and sirens.
After the war the company was in a poor financial state and the Managing Director was convicted of embezzling money. Around this time, the Ever Ready became interested in the works and purchased the company at the beginning of 1925 for production of dry batteries and radio receivers.