Granted Patent
Utility
US 6,296,439 · App. 09/344,396
Regenerative turbine pump impeller
Inventors:
DeQuan Yu, Ronald Luce Verkleeren
Patented Case
View Patent ↗
Granted: Oct 2, 2001
Filed: Jun 23, 1999
Inventors
DeQuan Yu
Ronald Luce Verkleeren
Assignee (at issue)
Visteon Global Technologies, 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.