29th September 1939, Page 34
29th September 1939
Page 34

Page 34, 29th September 1939
Close
Servo Control For Oil-engine Injection Timing
A Résumé of Patent Specifications that Have Recently Been Published F ROMF. J. Tippen, 21, Orchard Crescent, Coventry, comes patent No. 511,344, giving details of a scheme for......