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 corresponding number, patentee, and title.
| Identifier | ExFiles\Box 147\2\ scan0270 | |
| Date | 21th March 1940 guessed | |
| No. Patentee. Title. 23090 Junkers Flugzeug-und- Means for controlling the moveable parts of aircraft. Motorenwerke A.G. 23198 " " Controls apparatus operated by fluid pressure 23893 L.Grillet. Variable pitch aerial propellers 23909 Soc.Anon. S.P.I.C.A Compressed air started motors for internal combustion engines -------------------- Copies of these, or extracts from them can be obtained if desired. | ||