Granted Patent
Utility
US 5,994,938 · App. 09/016,757
Self-calibrating programmable phase shifter
Inventor:
Gary J. Lesmeister
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Jan 30, 1998
Inventor
Gary J. Lesmeister
Assignee (at issue)
Credence Systems 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.