Granted Patent
Utility
US 6,819,665 · App. 09/564,287
Private branch exchange implemented using H.323 gatekeeper
Inventors:
Debbie Pinard, Harold Sit, Sonya Fullarton, Eliana Peres
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: May 4, 2000
Inventors
Debbie Pinard
Harold Sit
Sonya Fullarton
Eliana Peres
Assignee (at issue)
MITEL KNOWLEDGE CORPORATION
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.