Letter from Marks & Clerk, Consulting Engineers, 57 & 58 Lincoln's Inn Fields, London, W. C. 2., to [Alan Archibald Campbell] Swinton [Esquire], 40 Chester Square, S. W. 1. Informing Swinton that they have examined British Patent 255057 relating to television apparatus and found that the same is still not yet accepted but is open to public inspection. They have additionally made a name search for Zworykin covering the period 1911 to date without success in locating any disclosures in this name relating to television apparatus. 3 February 1927