Granted Patent
Utility
US 5,375,586 · App. 08/104,859
Condensate isolator and drainage system for furnace
Inventors:
David Schumacher, William G. Manda
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Aug 11, 1993
Inventors
David Schumacher
William G. Manda
Assignee (at issue)
Inter-City Products Corporation (USA)
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.