Granted Patent
Utility
US 4,613,746 · App. 06/742,372
Method and apparatus for automatically controlling the temperature of a heater element
Inventor:
Donald N. MacLaughlin
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Jun 7, 1985
Inventor
Donald N. MacLaughlin
Assignee (at issue)
Cosden Technology, 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.