Granted Patent
Utility
US 5,565,622 · App. 08/306,551
Reduced solvent solid phase extraction
Inventor:
Gregory E. Murphy
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Sep 15, 1994
Inventor
Gregory E. Murphy
Assignee (at issue)
Hewlett-Packard Co., Legal Dept.
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.