Granted Patent
Utility
US 4,942,613 · App. 07/279,419
Service thermostat
Inventor:
Gregory A. Lynch
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Dec 2, 1988
Inventor
Gregory A. Lynch
Assignee (at issue)
Heil-Quaker Corporation
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.