Granted Patent
Utility
US 4,833,406 · App. 06/854,062
Temperature compensated Hall-effect sensor apparatus
Inventor:
Johnny R. Foster
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Apr 17, 1986
Inventor
Johnny R. Foster
Assignee (at issue)
Household Commercial Financial Services 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.