Granted Patent
Utility
US 5,089,927 · App. 07/420,487
Power feed circuit for digital communications terminal equipment
Inventors:
Sergiu Bulan, Johannes Lambertus Holt
Patented Case
View Patent ↗
Granted: Feb 18, 1992
Filed: Oct 12, 1989
Inventors
Sergiu Bulan
Johannes Lambertus Holt
Assignee (at issue)
Nortel Networks Limited
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.