Granted Patent
Utility
US 4,895,276 · App. 07/269,620
Dual liquid cartridge dispenser
Inventor:
John Maldonado
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Nov 10, 1988
Inventor
John Maldonado
Assignee (at issue)
Sani-Fresh International, Inc.
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.