Granted Patent
Utility
US 4,015,401 · App. 05/568,989
Method of forming closure system for medical liquid container
Inventors:
Elmer F. St. Amand, Thomas R. Thornbury
Patented Case
View Patent ↗
Granted: Apr 5, 1977
Filed: Apr 17, 1975
Inventors
Elmer F. St. Amand
Thomas R. Thornbury
Assignee (at issue)
American Hospital Supply Corp.
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.