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).
Letter from Associated Equipment Co Ltd regarding salt-cooled valves and potential patent infringements.
| Identifier | ExFiles\Box 158\5\ scan0014 | |
| Date | 27th February 1939 | |
| THE ASSOCIATED EQUIPMENT CO LTD TELEPHONE: SOUTHALL 2424 (17 LINES). TELEGRAMS: "VANGASTOW PHONE SOUTHALL" YOUR REF. OUR REF. C.E./GD. 27th February, 1939. W. A.{Mr Adams} Robotham Esq., Chief Experimental Car Engineer, Messrs. Rolls-Royce Ltd., Derby. Dear Mr. Robotham, With reference to the discussion you had with me last week, we are now putting through a quantity of salt cooled valves for test, and I think it is almost inevitable we shall have to adopt them also for production. The question has been raised here as to what patents we are liable to infringe, and I should be glad if you could give me any information as to what the patent position is. I enclose herewith a print showing the type of valve under consideration. Yours faithfully, For THE ASSOCIATED EQUIPMENT CO. LTD., (G.{Mr Griffiths - Chief Accountant / Mr Gnapp} J.{Mr Johnson W.M.} Rackham.) CHIEF ENGINEER. ENCLOSURE 8926a CUSTOMERS' VEHICLES ARE BROUGHT ON TO OUR PREMISES, DRIVEN BY OUR STAFF, AND STORED FOR REPAIRS AT CUSTOMERS' OWN RISK AGAINST DAMAGE HOWSOEVER CAUSED. Handwritten notes: Sales 1360 | ||