Granted Patent
Utility
US 4,609,047 · App. 06/635,767
Quick release mechanism for sprinkler head
Inventor:
George S. Pieczykolan
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Jul 30, 1984
Inventor
George S. Pieczykolan
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.