Granted Patent
Utility
US 4,453,825 · App. 06/323,605
Distance transducer
Inventors:
Dean C. Buck, Richard Warren, David E. Smith, David J. Rustici
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Nov 20, 1981
Inventors
Dean C. Buck
Richard Warren
David E. Smith
David J. Rustici
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.