Granted Patent
Utility
US 5,592,745 · App. 08/381,977
Electronic level displaying inclination with regard to instrument length
Inventors:
Charles E. Heger, Gary R. Schultheis
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Feb 13, 1995
Inventors
Charles E. Heger
Gary R. Schultheis
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.