Granted Patent
Utility
US 5,590,837 · App. 08/395,851
Sprayer having variable spray pattern
Inventor:
R. Pat Grogan
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Feb 28, 1995
Inventor
R. Pat Grogan
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.