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 143,368 pages of information and 230,031 images on early companies, their products and the people who designed and built them.

Aero Piston Ring Co

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March 1939.
March 1939.

of Aero Works, Black Bull Street, Leeds

  • 1937 Piston ring manufacturers. "Aero" Piston Rings. "Controil" Piston Rings. [1]

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