Granted Patent
Utility
US 4,969,331 · App. 07/251,422
Brake master cylinder and booster assembly for automotive vehicle
Inventor:
Thomas C. Holka
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Sep 30, 1988
Inventor
Thomas C. Holka
Assignee (at issue)
Ford Motor 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.