Granted Patent
Utility
US 4,490,977 · App. 06/544,926
Hydraulic brake booster
Inventor:
Keith H. Fulmer
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Oct 24, 1983
Inventor
Keith H. Fulmer
Assignee (at issue)
Bendix Limited
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.