Granted Patent
Utility
US 5,361,321 · App. 07/928,574
Portable electric heater deenergized by a tip-over responsive actuator
Inventor:
Frank Marino
Patented Case
View Patent ↗
Granted: Nov 1, 1994
Filed: Aug 13, 1992
Inventor
Frank Marino
Assignee (at issue)
Duracraft Corp.
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.