Granted Patent
Utility
US 4,450,346 · App. 06/263,637
Electric heater plate
Inventor:
Premakaran T. Boaz
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: May 14, 1981
Inventor
Premakaran T. Boaz
Assignee (at issue)
Ford Motor Company
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.