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 136,279 pages of information and 218,973 images on early companies, their products and the people who designed and built them.

Ozonair

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February 1931.
October 1952.

of 96 Victoria Street, Westminster, London.

1912 Apparatus for air purification.

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