Granted Patent
Utility
US 5,016,578 · App. 07/578,987
Intake manifold
Inventors:
Seiichi Ogawa, Minobu Sukimoto, Hitoshi Akiyoshi
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Sep 7, 1990
Inventors
Seiichi Ogawa
Minobu Sukimoto
Hitoshi Akiyoshi
Assignee (at issue)
Showa Aluminum Corp.
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.