Granted Patent
Utility
US 4,417,205 · App. 06/196,942
Detection apparatus utilizing a hall effect device
Inventors:
Robert J. Sabon, David L. Vonder
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Oct 14, 1980
Inventors
Robert J. Sabon
David L. Vonder
Assignee (at issue)
GTE Automatic Electric Labs 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.