Granted Patent
Utility
US 5,651,885 · App. 08/581,001
Column for liquid chromatography
Inventor:
Hans Schick
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Jan 3, 1996
Inventor
Hans Schick
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.