Granted Patent
Utility
US 6,123,154 · App. 09/228,082
Support system attachment mechanism for fire protection sprinklers
Inventors:
Norman J. MacDonald, III, Peter M. MacDonald, Paul S. F. Silcox
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: Jan 8, 1999
Inventors
Norman J. MacDonald, III
Peter M. MacDonald
Paul S. F. Silcox
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.