Granted Patent
Utility
US 4,848,947 · App. 07/105,452
Liquid applicator device with tilt valve
Inventors:
Leon V. Kremer, Ronald E. Kieras
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Oct 5, 1987
Inventors
Leon V. Kremer
Ronald E. Kieras
Assignee (at issue)
Pittway 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.