Granted Patent
Utility
US 4,583,692 · App. 06/583,462
Self-cleaning actuator button for dispensing liquids with particulate solids from a pressurized container or by piston pump
Inventors:
Robert J. Sheffler, Michael E. Radice, John E. Jedzinak
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Feb 24, 1984
Inventors
Robert J. Sheffler
Michael E. Radice
John E. Jedzinak
Assignee (at issue)
Revlon
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.