Granted Patent
Utility
US 4,480,762 · App. 06/387,345
Reuseable vial cap
Inventor:
Michael D. Thomas
Patented Case
View Patent ↗
Granted: Nov 6, 1984
Filed: Jun 11, 1982
Inventor
Michael D. Thomas
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.