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 148,396 pages of information and 233,863 images on early companies, their products and the people who designed and built them.

Greenwood's and Airvac Ventilating Co

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July 1945.
Jan 1947.
October 1952.
February 1962.

Greenwood's and Airvac Ventilating Co Ltd. Designers and Manufacturers of Ventilating Equipment for Buildings, Vehicles and Vessels of Beacon House, Kingsway, London. (1952).

Presumably brought together the company behind Greenwood's Patent Chimney Cowl and Airvac Ventilators

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