Granted Patent
Utility
US 4,337,654 · App. 06/183,419
Natural gas calorimeter
Inventors:
Robert Austin, Ernst R. Ginkel
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Sep 2, 1980
Inventors
Robert Austin
Ernst R. Ginkel
Assignee (at issue)
International Telephone and Telegraph 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.