Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,699 pages of information and 232,163 images on early companies, their products and the people who designed and built them.

Magnetic Devices

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June 1955.
June 1955.

1949 Subsidiary of Pye; maker of relays in association with Guardian Electric Corp of Chicago

1952 Company formed

1977 Magnetic Devices joined with Pye Electro Devices (solenoid manufacturers)

1983 Company renamed PED

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