Granted Patent
Utility
US 4,926,946 · App. 07/268,911
Pendent style sprinkler with cover
Inventor:
George S. Polan
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Nov 8, 1988
Inventor
George S. Polan
Assignee (at issue)
CENTRAL SPRINKLER CORPORATION
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.