Granted Patent
Utility
US 5,789,684 · App. 08/779,881
Liquid sample storage device
Inventors:
James Masek, John D. Hull, Robert L. Haahr
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Jan 6, 1997
Inventors
James Masek
John D. Hull
Robert L. Haahr
Assignee (at issue)
Isco, 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.