Granted Patent
Utility
US 5,755,250 · App. 08/313,197
Manifold and valve assembly for a smoke/pollution detection system
Inventor:
Martin Cole
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Nov 8, 1994
Inventor
Martin Cole
Assignee (at issue)
I.E.I. Pty. Ltd.
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.