Granted Patent
Utility
US 5,454,629 · App. 08/230,803
Method and apparatus for pressure control
Inventor:
Bernard W. Johnson
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Apr 21, 1994
Inventor
Bernard W. Johnson
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.