Granted Patent
Utility
US 6,138,662 · App. 08/809,768
Heaters
Inventor:
David M. Jones
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Mar 28, 1997
Inventor
David M. Jones
Assignee (at issue)
Philomena Joan Jones
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.