Granted Patent
Utility
US 4,154,213 · App. 05/792,807
Ductless forced-circulation undercounter furnace
Inventor:
Mellie E. Winters
Patented Case
View Patent ↗
Granted: May 15, 1979
Filed: May 2, 1977
Inventor
Mellie E. Winters
Assignee (at issue)
The Coleman Company, 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.