Granted Patent
Utility
US 4,493,716 · App. 06/433,889
Apparatus for the separation of hydrogen sulfide from a gas mixture
Inventor:
Robert H. Swick
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Oct 12, 1982
Inventor
Robert H. Swick
Assignee (at issue)
W. L. Gore & Associates, 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.