Granted Patent
Utility
US 4,951,174 · App. 07/292,276
Capacitive pressure sensor with third encircling plate
Inventors:
Daniel H. Grantham, Mario S. Latina
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Dec 30, 1988
Inventors
Daniel H. Grantham
Mario S. Latina
Assignee (at issue)
UNITED TECHNOLOGIES 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.