Patent · US Expired

Station set directory assistance arrangement

US4633041A · kind A · utility

24Cited by
4References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 9, 1984
Grant dateDec 30, 1986
Priority date
Expiry dateApr 9, 2004

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04M3/4931
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A stored directory is searched from a display station set to obtain the telephone number of a sought-after name. The arrangement uses the station set keypad to generate signals corresponding to the spelling of the sought-after name. The arrangement adds each entry it receives to previously formed sequence of entries and, for each newly formed sequence, returns to the station set the name and telephone number contained in a directory record having a string of characters that compare to the newly formed sequence. The arrangement also provides means for scrolling through the directory.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.