Granted Patent
Utility
US 6,347,752 · App. 09/438,804
Foam spray gun nozzle extension assembly
Inventors:
James W. Davidson, Robert J. Klein
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Nov 12, 1999
Inventors
James W. Davidson
Robert J. Klein
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.