Granted Patent
Utility
US 4,779,035 · App. 06/903,294
End of charge detector
Inventor:
Rudolph H. Engelmann
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Sep 2, 1986
Inventor
Rudolph H. Engelmann
Assignee (at issue)
Electro-Voice, Inc.
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.