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 167,701 pages of information and 247,103 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.

Harry Robert Mayes

From Graces Guide
Revision as of 05:50, 6 February 2019 by Ait (talk | contribs)

Harry Robert Mayes (1895-1970)

1950 Patent. 'Improvements in or relating to the crankcases of internal combustion engines of the type having horizontally opposed cylinders'[1]

1953 Patent. '734,359. Motor power plant; jet propulsion plant'[2]

See Also

Loading...

Sources of Information

  1. ↑ https://patents.google.com/patent/DE1023270B
  2. ↑ https://patents.google.com/patent/GB734359A/en
Retrieved from "https://gracesguide.co.uk/index.php?title=Harry_Robert_Mayes&oldid=1084062"
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