Granted Patent
Utility
US 6,705,489 · App. 10/154,381
Ratio controlled post-mix valve
Inventors:
Paul Henry, Steve Czeck, Philip Simmons, Keith James Heyes, Martin Johnson, Jamie Atkinson
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: May 22, 2002
Inventors
Paul Henry
Steve Czeck
Philip Simmons
Keith James Heyes
Martin Johnson
Jamie Atkinson
Assignee (at issue)
IMI Cornelius, 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.