Granted Patent
Utility
US 4,415,134 · App. 06/344,618
Hall effect track circuit receiving element
Inventor:
H. James Wilson
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Feb 1, 1982
Inventor
H. James Wilson
Assignee (at issue)
Safetran Systems 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.