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 147,936 pages of information and 233,602 images on early companies, their products and the people who designed and built them.

Water Softening and Purifying United Patents

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August 1899.
February 1901. The 'Tyacke' Softener.
January 1902. The 'Tyacke' Softener.
1902. The 'Tyacke' Softener.

of London

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