Granted Patent
Utility
US 4,567,376 · App. 06/562,669
Signal generator
Inventor:
Manfred W. Zebisch
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Dec 19, 1983
Inventor
Manfred W. Zebisch
Assignee (at issue)
International Standard Electric 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.