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 corresponding numbers, patentees, and titles.
| Identifier | ExFiles\Box 147\2\ scan0113 | |
| Date | 2nd November 1939 guessed | |
| No. Patentee. Title. 28476 A.A.D.Lang and H.V. Manufacture of airscrews, blades for airscrews, &c German. 28687 Magnesium Elektron Ltd Process for production of magnesium base alloys 28355 G.A.Main Power transmission devices 28492 Piaggio & Co., Soc. Variable pitch airscrews. Anon and C d'Ascanio 28493 " " Speed regulations particularly adapted for the automatic control of variable pitch airscrews during flight 28673 Soc.Annon Solex Control devices for variable pitch propellers 28674 " " Regulating devices for maximum speed limiting means for internal combustion engines. 28550 Vauxhall Motors Ltd., Gas producers for motor vehicles. M.Platt, A.Larking and A.Taub. 27781 A.H.Stevens Control systems for use with controllable pitch propellers ------------------------- 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. | ||