From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
List of patents with their number, patentee, and title.
| Identifier | ExFiles\Box 147\2\ scan0052 | |
| Date | 29th June 1939 guessed | |
| No. Patentee. Title. 17909 F.E.Rebbeck Means of supercharging four stroke internal engines. 17649 Soc.Francaise Hispano- Processes etc., for the production of light alloys Suiza 18055 J.F.Walwyn Variable-speed gearing --------- It should be noted that it is not possible to obtain further information regarding the above until or unless the applications are completed and published. | ||