Granted Patent
Utility
US 4,695,829 · App. 06/690,034
Temperature level indicating device and method of making the same
Inventors:
Charles J. Everett, Rolf H. Ochsner
Patented Case
View Patent ↗
Granted: Sep 22, 1987
Filed: Jan 9, 1985
Inventors
Charles J. Everett
Rolf H. Ochsner
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.