Granted Patent
Utility
US 5,961,867 · App. 09/071,023
Method and apparatus for controlling an electric heater
Inventor:
Kevin McWilliams
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: May 1, 1998
Inventor
Kevin McWilliams
Assignee (at issue)
Ceramaspeed, 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.