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).
Query regarding potential patent restrictions for creating an ethylene glycol-based anti-freezing mixture.
| Identifier | ExFiles\Box 151\3\ scan0173 | |
| Date | 30th April 1932 | |
| N-W. Hs.{Lord Ernest Hives - Chair} [Stamp] RECEIVED A.M.XII 2 MAY [Handwritten] X14335. A8/H.30.4.32. Technical - Anti-Freezing Compounds --------------------------- Thank you for your Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}9/MA.29.4.32. What I actually wanted to know was, if there is anything in the Prestone patent which would prevent us from obtaining ethylene glycol and mixing it up ourselves for use as an anti-freezing mixture. From the second paragraph of your memo as to the use of ethylene glycol mixture by the R.A.F., I take it that there is nothing in their patent to prevent us doing this. Perhaps, however, you will kindly confirm. A.{Mr Adams} [Handwritten] LID{A. J. Lidsey} [Handwritten Signature] | ||