Granted Patent
Utility
US 6,076,608 · App. 09/076,078
Fire-suppression sprinkler system and method for installation and retrofit
Inventors:
Norman J. MacDonald, III, Peter M. MacDonald
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: May 11, 1998
Inventors
Norman J. MacDonald, III
Peter M. MacDonald
Assignee (at issue)
PNM, 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.