Granted Patent
Utility
US 4,619,328 · App. 06/675,630
Fire extinguisher valve with pressure indicator
Inventors:
Gerard Seyler, Donald R. Sloan
Patented Case
View Patent ↗
Granted: Oct 28, 1986
Filed: Nov 28, 1984
Inventors
Gerard Seyler
Donald R. Sloan
Assignee (at issue)
Pittway 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.