Granted Patent
Utility
US 5,851,110 · App. 08/877,365
Burner box without manifold return
Inventor:
Ralph G. Ridenour
Patented Case
View Patent ↗
Granted: Dec 22, 1998
Filed: Jun 17, 1997
Inventor
Ralph G. Ridenour
Assignee (at issue)
Universal Tubular Systems, 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.