Granted Patent
Utility
US 6,564,642 · App. 09/704,376
Stable differential pressure measuring system
Inventor:
Mark J. Clifford
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Nov 2, 2000
Inventor
Mark J. Clifford
Assignee (at issue)
KAVLICO 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.