Granted Patent
Utility
US 4,677,282 · App. 06/833,284
Failure protection in temperature control
Inventor:
William J. Walsh
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Feb 27, 1986
Inventor
William J. Walsh
Assignee (at issue)
Thermolyne Holdings 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.