Granted Patent
Utility
US 4,574,850 · App. 06/692,409
Method of and apparatus for dispensing liquid
Inventor:
James E. Davis
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Jan 17, 1985
Inventor
James E. Davis
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.