Granted Patent
Utility
US 6,109,116 · App. 08/873,009
Method and apparatus for use in installing a through-the-wall sensing device in a laboratory fume hood
Inventor:
Paul E. Pelczynski
Patented Case
View Patent ↗
Granted: Aug 29, 2000
Filed: Jun 11, 1997
Inventor
Paul E. Pelczynski
Assignee (at issue)
SIEMENS BUILDING TECHNOLOGIES AG
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.