Granted Patent
Utility
US 4,567,439 · App. 06/535,200
Apparatus for measuring the magnitude of a magnetic field
Inventor:
Douglas D. McGregor
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Sep 23, 1983
Inventor
Douglas D. McGregor
Assignee (at issue)
Texas Instruments Incorporated
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.