Granted Patent
Utility
US 5,542,575 · App. 08/089,132
Liquid reagent container having a primary and secondary closure mechanism
Inventors:
William A. Stark, Ernest H. Pfadenhauer
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Jul 9, 1993
Inventors
William A. Stark
Ernest H. Pfadenhauer
Assignee (at issue)
Dade International, 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.