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 167,711 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.

Horace Leslie Crowther

From Graces Guide
Revision as of 10:52, 5 December 2014 by PaulF (talk | contribs) (Created page with "Horace Leslie Crowther, of the Instrument Design Establishment, Royal Air Force, Biggin Hill, Kent. 1921 Patent on improvements in thermionic valves ==See Also== <what-...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Horace Leslie Crowther, of the Instrument Design Establishment, Royal Air Force, Biggin Hill, Kent.

1921 Patent on improvements in thermionic valves


See Also

Loading...

Sources of Information

Retrieved from "https://gracesguide.co.uk/index.php?title=Horace_Leslie_Crowther&oldid=691706"
Privacy policy Disclaimers About Grace’s Guide Contact Grace’s Guide

Grace's Guide web site design is Copyright © 2025 by Grace's Guide Ltd. The text of this web site is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. 

MW1.43