Granted Patent
Utility
US 4,848,595 · App. 07/198,557
Product dispenser with shiftable closure blade
Inventors:
Donald D. Foster, Philip L. Nelson
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: May 23, 1988
Inventors
Donald D. Foster
Philip L. Nelson
Assignee (at issue)
Realex Corporation
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.