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 patent applications with their numbers, patentees, and titles.
| Identifier | ExFiles\Box 147\2\ scan0263 | |
| Date | 14th March 1940 guessed | |
| No. Patentee. Title. 3976 A.W.Weekes. and Heat treatment of International aluminium alloys etc. Refrigerator Co.Ltd. 3951 F.Whittle. Centrifugal compressors. --------------- It should be noted that it is not possible to obtain further information regarding the above until or unless the applications are completed and published. | ||