Granted Patent
Utility
US 5,898,908 · App. 08/728,681
RF gain enhancement for cellular telephone
Inventors:
Lee Daniel Griffin, Thomas Joseph Karpus
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Oct 9, 1996
Inventors
Lee Daniel Griffin
Thomas Joseph Karpus
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.