Granted Patent
Utility
US 5,647,539 · App. 08/392,397
Foamer nozzle assembly for trigger sprayer
Inventors:
Douglas B. Dobbs, Adonis Spathias
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Feb 22, 1995
Inventors
Douglas B. Dobbs
Adonis Spathias
Assignee (at issue)
Calmar Holdings 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.