Granted Patent
Utility
US 4,776,513 · App. 07/051,241
Double seal thermostat
Inventors:
James J. Grinsteiner, George J. Maat
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: May 13, 1987
Inventors
James J. Grinsteiner
George J. Maat
Assignee (at issue)
Navistar International Transportation
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.