Granted Patent
Utility
US 5,013,433 · App. 07/419,086
Zero void column end plate for chromatography
Inventor:
Yehuda Shalon
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Oct 10, 1989
Inventor
Yehuda Shalon
Assignee (at issue)
HT Chemicals, 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.