Granted Patent
Utility
US 4,395,921 · App. 06/277,902
Adjustable volume liquid dispenser
Inventor:
Jon E. Oppenlander
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Jun 26, 1981
Inventor
Jon E. Oppenlander
Assignee (at issue)
Scientific Manufacturing Industries, 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.