Granted Patent
Utility
US 4,386,684 · App. 06/372,865
Electric brake magnet
Inventor:
B. Robert Prokop
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Apr 28, 1982
Inventor
B. Robert Prokop
Assignee (at issue)
KELSEY-HAYES-COMPANY
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.