Granted Patent
Utility
US 4,309,673 · App. 06/129,056
Delay lock loop modulator and demodulator
Inventors:
Gayle Russell Norberg, Dennis M. Petrich
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: Mar 10, 1980
Inventors
Gayle Russell Norberg
Dennis M. Petrich
Assignee (at issue)
Control Data Corporation
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.