Granted Patent
Utility
US 5,041,267 · App. 07/248,686
Ultra high purity reagent container with large breakseal
Inventors:
Peter T. Randtke, Hans-Juergen Graf
Patented Case
View Patent ↗
Granted: Aug 20, 1991
Filed: Sep 23, 1988
Inventors
Peter T. Randtke
Hans-Juergen Graf
Assignee (at issue)
Air Products and Chemicals, 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.