Granted Patent
Utility
US 4,449,477 · App. 06/349,102
Liquid dispenser
Inventor:
Paul A. Davignon
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Feb 16, 1982
Inventor
Paul A. Davignon
Assignee (at issue)
American Optical 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.