Granted Patent
Utility
US 4,881,162 · App. 07/168,447
Frequency control system
Inventor:
Frederick G. Reinagel
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Mar 15, 1988
Inventor
Frederick G. Reinagel
Assignee (at issue)
LTV Aerospace and Defense 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.