Granted Patent
Utility
US 4,928,075 · App. 07/371,494
Multiple bandwidth filter system for phase locked loop
Inventor:
Michael D. Leis
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Jun 26, 1989
Inventor
Michael D. Leis
Assignee (at issue)
Digital Equipment 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.