Granted Patent
Utility
US 5,353,631 · App. 07/891,843
Analyzing internal pressure of a sealed container using frequency spectra
Inventors:
Charles A. Woringer, John H. Waygan
Patented Case
View Patent ↗
Granted: Oct 11, 1994
Filed: May 29, 1992
Inventors
Charles A. Woringer
John H. Waygan
Assignee (at issue)
Benthos, 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.