Granted Patent
Utility
US 4,265,860 · App. 06/134,625
High pressure Soxhlet extractor
Inventors:
Walter G. Jennings, Robert Wohleb, Norman W. Wohlers
Patented Case
View Patent ↗
Granted: May 5, 1981
Filed: Mar 27, 1980
Inventors
Walter G. Jennings
Robert Wohleb
Norman W. Wohlers
Assignee (at issue)
J & W Scientific, Incorporated
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.