Grace's Guide To British Industrial History

Registered UK Charity (No. 1154342)

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,713 pages of information and 247,105 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.

E. R. Calthrops Aerial Patents: Difference between revisions

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New page: thumb| 1920. Ref AA below ==Sources of Information== * AA. [http://www.AviationAncestry.com] Image courtesy of Aviation Ancestry
 
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[[Image:Parachutes-GuardianAngel-1920-1.jpeg|thumb| 1920. Ref AA below]]
[[Image:Parachutes-GuardianAngel-1920-1.jpeg|thumb| 1920. ]]


== See Also ==
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==Sources of Information==
== Sources of Information ==
* AA. [http://www.AviationAncestry.com] Image courtesy of Aviation Ancestry
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Revision as of 18:19, 20 November 2014

1920.

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