Granted Patent
Utility
US 4,993,265 · App. 07/362,113
Protected pressure sensor and method of making
Inventors:
Edward F. Koen, Richard Tasker
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Jun 5, 1989
Inventors
Edward F. Koen
Richard Tasker
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.