This page brings together patents, design documents and historical records relating to the Northern Telecom Vista 250 and Vista 350 telephones. The collection includes a 1991 telephone base-set application, invention disclosures, later telephone base designs, a 1994 Vista case study and documents relating to screen based telephone sets.
Also included are U.S. patent documents, a Design to Value publication from 1994 and material from the Chicago Athenaeum. Together, these records provide a useful look at the design development and documentation associated with Northern Telecom’s Vista telephone family.
These documents are preserved as part of the Old Telephone Room’s personal collection of telecommunications history.
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