Granted Patent
Utility
US 4,801,033 · App. 07/174,690
Reusable vial cap
Inventor:
Rowland W. Kanner
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Mar 29, 1988
Inventor
Rowland W. Kanner
Assignee (at issue)
RYDER INTERNATIONAL CO., LTD.
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.