Granted Patent
Utility
US 6,481,291 · App. 09/929,847
Pressure measuring device
Inventors:
Raymond A. Lia, Robert L. Vivenzio, Raymond P. Dromms
Patented Case
View Patent ↗
Granted: Nov 19, 2002
Filed: Aug 14, 2001
Inventors
Raymond A. Lia
Robert L. Vivenzio
Raymond P. Dromms
Assignee (at issue)
Welch Allyn, Inc.
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.