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).
Outside patent searches for specifications open to public inspection.
| Identifier | ExFiles\Box 147\4\ scan0130 | |
| Date | 24th October 1940 | |
| OUTSIDE PATENT SEARCHES. WEEK ENDING 24th October 1940. SPECIFICATIONS not yet accepted which have become open to public inspection. No. Patentee. Title. 1940 5691 General Motors Corporation Friction clutches. 6560 Soc.Anon E.Mascherpa. Control means for change-speed gears. 6656 Aluminium Co of America Joining of metals Copies of the above specifications or extracts from them can be obtained, if desired. | ||