Granted Patent
Utility
US 4,721,344 · App. 06/663,638
Electric brake controller
Inventors:
John S. Frait, Michael D. Warner, David T. Ayers
Patented Case
View Patent ↗
Granted: Jan 26, 1988
Filed: Oct 22, 1984
Inventors
John S. Frait
Michael D. Warner
David T. Ayers
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.