Granted Patent
Utility
US 4,890,773 · App. 07/357,899
Viscous product dispenser
Inventor:
Douglas F. Corsette
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: May 25, 1989
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.