Granted Patent
Utility
US 4,826,085 · App. 07/154,311
Aspiration-type sprayer with improved safety feature
Inventors:
Ho Chow, Joseph E. Testa
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Feb 10, 1988
Inventors
Ho Chow
Joseph E. Testa
Assignee (at issue)
Hunter-Melnor, Inc.
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.