Granted Patent
Utility
US 4,693,121 · App. 06/741,538
Differential-pressure measuring apparatus with improved overpressure protection
Inventors:
Howard W. Nudd, Jr., David N. De Moura
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Jun 5, 1985
Inventors
Howard W. Nudd, Jr.
David N. De Moura
Assignee (at issue)
Fox Boro 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.