Granted Patent
Utility
US 6,456,595 · App. 09/161,906
Alarm indication signal detection in the presence of special line codes in DS1 (T1) telephone circuits
Inventors:
William G. Bartholomay, Santanu Bhattacharya, Pushkal Yadav, Balaraj Vishnu Varthanan
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Sep 28, 1998
Inventors
William G. Bartholomay
Santanu Bhattacharya
Pushkal Yadav
Balaraj Vishnu Varthanan
Assignee (at issue)
Transwitch 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.