Granted Patent
Utility
US 5,935,519 · App. 08/862,485
Apparatus for the detection of sulfur
Inventors:
Richard L. Benner, Donald H. Stedman
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: May 23, 1997
Inventors
Richard L. Benner
Donald H. Stedman
Assignee (at issue)
Sievers Instruments, 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.