Granted Patent
Utility
US 4,237,198 · App. 06/072,879
Electrical device with bi-level battery state-of-charge indicator
Inventors:
Richard L. Eby, Lester E. Wilson
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Sep 6, 1979
Inventors
Richard L. Eby
Lester E. Wilson
Assignee (at issue)
Anderson Power Products, 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.