Granted Patent
Utility
US 4,522,450 · App. 06/489,116
Brake system
Inventors:
Joseph K. Heilhecker, James Byrne
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Apr 27, 1983
Inventors
Joseph K. Heilhecker
James Byrne
Assignee (at issue)
GH TTE
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.