Granted Patent
Utility
US 6,222,500 · App. 09/306,144
Device for impedance adaption
Inventors:
Evald Koitsalu, Lars Wallin
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: May 6, 1999
Inventors
Evald Koitsalu
Lars Wallin
Assignee (at issue)
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
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.