Granted Patent
Utility
US 4,872,596 · App. 07/168,248
Viscous product dispenser
Inventor:
Douglas F. Corsette
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Mar 15, 1988
Inventor
Douglas F. Corsette
Assignee (at issue)
Calmar Holdings 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.