Granted Patent
Utility
US 4,995,264 · App. 07/450,856
Gas pressure gauge and pressure measuring method
Inventors:
Rudolf Stocker, Walter Schaedler
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Dec 14, 1989
Inventors
Rudolf Stocker
Walter Schaedler
Assignee (at issue)
Balzers Aktiengesellschaft
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.