Granted Patent
Utility
US 5,915,933 · App. 08/856,811
Rotation preventing mechanism for fluid displacement apparatus
Inventors:
Jiro Iizuka, Shinichi Ohtake
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: May 15, 1997
Inventors
Jiro Iizuka
Shinichi Ohtake
Assignee (at issue)
SANDEN CORPORATION
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.