Granted Patent
Utility
US 5,980,310 · App. 09/020,336
Power supply unit for portable apparatus and of the type enabling various types of power source to be used, and corresponding portable apparatus
Inventors:
Christian Bourel, Robert Bertrand
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Feb 9, 1998
Inventors
Christian Bourel
Robert Bertrand
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.