Granted Patent
Utility
US 4,860,321 · App. 06/775,909
Lock detector for feedback loops
Inventor:
U. A. von der Embse
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Sep 13, 1985
Inventor
U. A. von der Embse
Assignee (at issue)
Hughes Aircraft Company
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.