Granted Patent
Utility
US 4,486,312 · App. 06/522,826
Analysis of liquid streams using tubing with protuberances on its inner wall
Inventors:
Rosanne W. Slingsby, Christopher A. Pohl
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Aug 12, 1983
Inventors
Rosanne W. Slingsby
Christopher A. Pohl
Assignee (at issue)
Dionex Corporation
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.