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).
Weekly summary of outside patent searches and specifications open to public inspection.
| Identifier | ExFiles\Box 147\4\ scan0129 | |
| Date | 18th October 1940 | |
| OUTSIDE PATENT SEARCHES. WEEK ENDING 18th October 1940. SPECIFICATIONS not yet accepted which have become open to public inspection. --------------- No. Patentee. Title. 1939 22338 Borg and Beck Co.Ltd. Friction clutches 1940 322 W de Keyser Recovery of aluminium from waste. 5640 United Aircraft Corporation. Speed responsive control devices. 6323 British Thomson-Houston Co.Ltd. Propelling plant for aircraft. --------------- Copies of the above specifications or extracts from them can be obtained, if desired. | ||