Granted Patent
Utility
US 4,539,488 · App. 06/576,077
Pulse wave to parabola wave converter
Inventor:
Stanley E. Lehnert
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Feb 1, 1984
Inventor
Stanley E. Lehnert
Assignee (at issue)
Zenith Electronics LLC
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.