Granted Patent
Utility
US 4,861,473 · App. 07/243,177
Apparatus for facilitating compression of packing material in a liquid chromatography column
Inventors:
Carl L. Shackelford, Kenneth Rainin
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Sep 8, 1988
Inventors
Carl L. Shackelford
Kenneth Rainin
Assignee (at issue)
Rainin Instrument, LLC
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.