Granted Patent
Utility
US 4,374,089 · App. 06/341,396
Chromatographic accessory incorporating injection switch assembly
Inventors:
Kumiy R. Iwao, James V. Lovie
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Jan 21, 1982
Inventors
Kumiy R. Iwao
James V. Lovie
Assignee (at issue)
Varian, 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.