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 by Claremont Haynes & Co. on outside patent searches, listing specifications open to public inspection.
| Identifier | ExFiles\Box 147\2\ scan0058 | |
| Date | 31th August 1939 | |
| OUTSIDE PATENT SEARCHES. REPORT BY CLAREMONT HAYNES & CO. Week ending 31st August 1939 SPECIFICATIONS not yet accepted which have become open to public inspection. ---------- No. Patentee. Title. 7405 - 6 M.Birkigt Automatic firearms 2239 F.Porsche Transmission-systems for automobiles. 2409 " Sheet metal doors ---------- Copies of these, or extracts from them can be obtained if desired. | ||