Granted Patent
Utility
US 4,887,747 · App. 07/204,166
Two-piece, snap-action closure
Inventors:
Efrem M. Ostrowsky, John P. Kinsley
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Jun 8, 1988
Inventors
Efrem M. Ostrowsky
John P. Kinsley
Assignee (at issue)
Seaquist Closures, a division of Pittway Corp.
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.