Granted Patent
Utility
US 5,388,151 · App. 08/246,915
Technique for reducing message notification blockage in voice mail systems
Inventors:
Zafar M. Khalid, Rachel Ramsay, Brian M. Tennant
Patented Case
View Patent ↗
Granted: Feb 7, 1995
Filed: May 20, 1994
Inventors
Zafar M. Khalid
Rachel Ramsay
Brian M. Tennant
Assignee (at issue)
Rolm Systems
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.