Granted Patent
Utility
US 4,965,698 · App. 07/414,129
Capacitance humidity sensor
Inventors:
Paul E. Thoma, Jeannine O. Colla
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Sep 27, 1989
Inventors
Paul E. Thoma
Jeannine O. Colla
Assignee (at issue)
Johnson Service Company
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.