Granted Patent
Utility
US 4,729,285 · App. 06/882,985
Control valve for a vacuum brake booster
Inventor:
Gregory K. Harrison
Patented Case
View Patent ↗
Granted: Mar 8, 1988
Filed: Jul 7, 1986
Inventor
Gregory K. Harrison
Assignee (at issue)
ALLIED CONSULTING, INC.
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.