Granted Patent
Utility
US 4,785,963 · App. 07/142,510
Tamper-evident buttress plug closure
Inventor:
Robert E. Magley
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Jan 11, 1988
Inventor
Robert E. Magley
Assignee (at issue)
RIEKE LLC
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.