Granted Patent
Utility
US 4,745,794 · App. 06/944,351
Analyzer for carbon dioxide in beverages
Inventors:
John Carl Steichen, James R. Small
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Dec 22, 1986
Inventors
John Carl Steichen
James R. Small
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.