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 listing available specifications and their opposition date.
| Identifier | ExFiles\Box 147\2\ scan0004 | |
| Date | 19th January 1939 | |
| 646. OUTSIDE PATENT SEARCHES. REPORT BY CLAREMONT HAYNES & CO. Week ending 19th January 1939 SPECIFICATIONS which have become available (Opposition date 7th March 1939) ------------------ No. Patentee. Title. E 497,567 Richard John Tugwood Improvements in and (A communication from connected with the Daimler-Benz A.G) driving of Blowers for charging internal combustion engines. Ry 497,648 Aluminium Colors Inc., Improvements in or relating to the coating of aluminium or alumin- ium alloy articles. E 497,674 The Bristol Aeroplane Improvements in Car- Co.Ltd., Alfred Hubert burettors for Internal Roy{Sir Henry Royce} Fedden and Alfred combustion engines. Carey Clinch. Ry 497,575 William Henry Bramble Improvements in or re- and Ruston & Hornsby lating to Friction Ltd. Clutches. Ry 497,578 " " Improvements in or relating to Change- speed Gearing | ||