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. listing recently available patent specifications for the week ending 15th September 1938.
| Identifier | ExFiles\Box 147\3\ scan0140 | |
| Date | 15th September 1938 | |
| 646 OUTSIDE PATENT SEARCHES. REPORT BY CLAREMONT HAYNES & CO. Week ending 15th September 1938. SPECIFICATIONS which have become available (Opposition dated 31st October 1938) No. Patentee. Title. 490,705. The Bristol Aeroplane Co.Ltd., Improvements in Change Speed Gearing Alfred Hubert Roy{Sir Henry Royce} Fedden and Roger Lander Ninnes 490,747 United Aircraft Corporation Improvements in or relating to Oppositely Rotating Coaxial Propellers. 490,547 La{L. A. Archer} Precision Mecanique Improvements in or relating to the Regulation of Fuel Injection Pumps By 490,793 Louis Renault Improvements in Hydraulic Servo-Brakes for Motor Vehicles ------------ | ||