Granted Patent
Utility
US 6,236,214 · App. 09/471,603
Method and apparatus for determining the remaining operation time of a mobile communication unit
Inventors:
William O. Camp, Jr., Chris Turner, I. Nelson Wakefield
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Dec 23, 1999
Inventors
William O. Camp, Jr.
Chris Turner
I. Nelson Wakefield
Assignee (at issue)
ERICSSON GMBH
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.