Granted Patent
Utility
US 6,055,281 · App. 08/975,142
Passband DQPSK detector for a digital communications receiver
Inventors:
Alan F. Hendrickson, Paul G. Schnizlein
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Nov 20, 1997
Inventors
Alan F. Hendrickson
Paul G. Schnizlein
Assignee (at issue)
DSP Group Ltd.
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.