Granted Patent
Utility
US 4,338,569 · App. 06/129,286
Delay lock loop
Inventor:
Dennis M. Petrich
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Mar 11, 1980
Inventor
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.