Granted Patent
Utility
US 5,986,509 · App. 09/123,827
Transistor amplifier stage
Inventor:
Gerhard Lohninger
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Jul 28, 1998
Inventor
Gerhard Lohninger
Assignee (at issue)
Siemens Aktiengesellschaft
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.