Granted Patent
Utility
US 5,579,944 · App. 08/340,817
Multi-layer gasket for an aerosol container
Inventors:
Hans W. Hafner, Timothy O'Toole
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Nov 17, 1994
Inventors
Hans W. Hafner
Timothy O'Toole
Assignee (at issue)
Precision Valve 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.