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 two patents, noting the patentee and title for each.
| Identifier | ExFiles\Box 147\2\ scan0250 | |
| Date | 28th February 1940 guessed | |
| No. Patentee. Title. 20898 F.Porsche. Gear changing means. 21076 Junkers Flugzeug-und- Shaping machines Motorenwerke A.G. -------------------- Copies of these, or extracts from them can be obtained if desired. | ||