Granted Patent
Utility
US 5,259,118 · App. 07/810,739
Electronic capacitive level with display showing direction of rotation to achieve level/plumb
Inventor:
Charles E. Heger
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Dec 18, 1991
Inventor
Charles E. Heger
Assignee (at issue)
Zircon 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.