Granted Patent
Utility
US 6,718,863 · App. 10/021,073
Vacuum booster
Inventor:
Takayoshi Shinohara
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Dec 19, 2001
Inventor
Takayoshi Shinohara
Assignee (at issue)
NISSIN KOGYO CO., LTD.
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.