Granted Patent
Utility
US 4,865,728 · App. 07/305,184
Adaptor for allowing different gel bed heights in a chromatographic separation column
Inventor:
Lars-Ake Larsson
Patented Case
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Granted: Sep 12, 1989
Filed: Feb 2, 1989
Inventor
Lars-Ake Larsson
Assignee (at issue)
Pharmacia AB
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.