Granted Patent
Utility
US 6,049,598 · App. 08/919,833
Facility for tying a door intercommunication system with a video camera to an integrated services digital network
Inventors:
Wolfgang Peters, Gerhard Schneider
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Aug 28, 1997
Inventors
Wolfgang Peters
Gerhard Schneider
Assignee (at issue)
ALCATEL
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.