Granted Patent
Utility
US 5,653,220 · App. 08/376,893
Burn rate control valve for gas fired heaters
Inventors:
Wallance W. Velie, Donald C. Haney, Paul Biallas
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: Jan 20, 1995
Inventors
Wallance W. Velie
Donald C. Haney
Paul Biallas
Assignee (at issue)
Leland C. Scheu
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.