Northern Telecom Vista 250-350 Patents and Documents.
01 December 01st 1991 Telephone Base Set Application.pdf
02 March 30th 1993 Disclosure of Invention.pdf
03 June 28th 1993 Telephone Base.pdf
04 January 19th 1994 Telephone Bases.pdf
06 Feburary 10th 1995 Screen Based Set.pdf
07 1995 The Chicago Athenaeum.pdf
08 June 28th 1993 Telephone Base US Patent.pdf