Granted Patent
Utility
US 5,158,233 · App. 07/772,700
Foamer trigger dispenser with sealing device
Inventors:
Donald D. Foster, Philip L. Nelson
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Oct 7, 1991
Inventors
Donald D. Foster
Philip L. Nelson
Assignee (at issue)
Contico International, LLC
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.