Granted Patent
Utility
US 4,941,592 · App. 07/367,868
Hinged dispensing closure with a tamper-evident seal
Inventor:
Lawrence R. Kitterman
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Jun 19, 1989
Inventor
Lawrence R. Kitterman
Assignee (at issue)
Seaquist Closures
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.