Granted Patent
Utility
US 4,534,481 · App. 06/636,910
Snap-on, tamper-evident container closure
Inventors:
Kenneth L. Summers, Gary M. Baughman
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Aug 2, 1984
Inventors
Kenneth L. Summers
Gary M. Baughman
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.