Granted Patent
Utility
US 4,475,667 · App. 06/455,986
Aerosol assembly for signalling depletion of a preselected amount of _the container contents when in an inverted position
Inventors:
Peter Ori, Carleen Kreider
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Jan 6, 1983
Inventors
Peter Ori
Carleen Kreider
Assignee (at issue)
Seaquist Valve 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.