Granted Patent
Utility
US 6,796,770 · App. 10/288,469
Impeller and method using solid free form fabrication
Inventors:
Bernd Gigas, Steve Hale
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Nov 6, 2002
Inventors
Bernd Gigas
Steve Hale
Assignee (at issue)
SPX 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.