Granted Patent
Utility
US 4,971,227 · App. 07/360,286
Manually actuated dispensing pump sprayer having a removable nozzle locking element
Inventors:
Michael G. Knickerbocker, R. Kevin O'Neill, Douglas B. Dobbs
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Jun 2, 1989
Inventors
Michael G. Knickerbocker
R. Kevin O'Neill
Douglas B. Dobbs
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.