Granted Patent
Utility
US 4,128,476 · App. 05/806,456
Carrier composition control for liquid chromatographic systems
Inventor:
John V. Rock
Patented Case
View Patent ↗
Granted: Dec 5, 1978
Filed: Jun 14, 1977
Inventor
John V. Rock
Assignee (at issue)
Spectra-Physics, 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.