Granted Patent
Utility
US 4,859,001 · App. 07/138,168
Isolation valve bypass for master cylinder brake fluid in wheel lock control system
Inventors:
Donald L. Parker, David Fredrick Reuter, Patrick Roussel
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Dec 28, 1987
Inventors
Donald L. Parker
David Fredrick Reuter
Patrick Roussel
Assignee (at issue)
General Motors LLC
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.