Granted Patent
Utility
US 6,609,883 · App. 09/734,532
Rotary pump with hydrodynamically suspended impeller
Inventors:
John Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Dec 11, 2000
Inventors
John Woodard
Peter Andrew Watterson
Geoffrey Douglas Tansley
Assignees (at issue)
Ventrassist Pty Ltd.
UNIVERSITY OF TECHNOLOGY SYDNEY
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.