Grace's Guide To British Industrial History

Registered UK Charity (No. 115342)

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,260 pages of information and 244,501 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

James D. Roots and Co

From Graces Guide
May 1906.
September 1908.
October 1912.
November 1912.

Agents for the patents of James Dennis Roots

1908 Patent applied for on an improved rotary motor, pump, blower or meter

See Also

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Sources of Information