Very faded and almost illegible typed document with a purple receiving stamp.
| Identifier | ExFiles\Box 14\4\ Scan055 | |
| Date | 1st May 1928 | |
| [Illegible typed text] [Stamp] RECEIVED PATENT ROOM 1 MAY 1928 DERBY. | ||
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).