Granted Patent
Utility
US 5,833,438 · App. 08/509,400
Variable displacement vane pump having cam seal with seal land
Inventor:
Jack G. Sundberg
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Jul 31, 1995
Inventor
Jack G. Sundberg
Assignee (at issue)
COLTEC INDUSTRIES, 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.