Granted Patent
Utility
US 6,559,448 · App. 09/663,494
Passive infrared detector
Inventors:
Kurt Muller, Martin Allemann
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Sep 18, 2000
Inventors
Kurt Muller
Martin Allemann
Assignee (at issue)
Siemens Buildings Technologies, 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.