Granted Patent
Utility
US 5,961,316 · App. 08/547,973
Oil burner
Inventors:
James E. Wellman, Edward W. Johann, Eric Warry, Donald C. Metrish
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Oct 25, 1995
Inventors
James E. Wellman
Edward W. Johann
Eric Warry
Donald C. Metrish
Assignee (at issue)
Weil-McLain
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.