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).
Report from Claremont Haynes & Co. listing patent specifications open for public inspection.
| Identifier | ExFiles\Box 147\2\ scan0341 | |
| Date | 30th May 1940 | |
| OUTSIDE PATENT SEARCHES. REPORT BY CLAREMONT HAYNES & CO. SPECIFICATIONS not yet accepted which have become open to public inspection -------------- Week ending 30th May 1940. No. Patentee. Title. 30427 M.J.B.Barbarou Device for mounting two aeroplane propellers co-axially and with reverse directions of rotation, comprising an offset speed-reducing gear. 24062 Dow Chemical Co. Production of protective coatings on magnesium and magnesium alloys. 29782 - 3 Vickers Inc. Power transmission systems. 30021 Motosacoche S.A. Starting of multi-cylinder internal combustion engines. 30110-11 General Motors Corporation. Electric circuit-interrupters. 30223 P. Martinotti. Rotary systems and particularly air screws for aircraft. 31478 C.R Waseige. Variable pitch aerial propellers. 32391 " " " -------------- Copies of these, or extracts from them can be obtained if desired. | ||