Granted Patent
Utility
US 4,243,161 · App. 05/872,236
Continuous spray button
Inventor:
Ronald F. Ewald
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Mar 17, 1978
Inventor
Ronald F. Ewald
Assignee (at issue)
Seaquist Valve Co., Div. of Pittway Corp.
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.