Patent · US Expired

Standalone telephone answering machine with store and forward facsimile

US6370239B1 · kind B1 · utility

3Cited by
2References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 8, 1999
Grant dateApr 9, 2002
Priority date
Expiry dateJul 8, 2019

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N2201/0015
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

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