Granted Patent
Utility
US 6,380,882 · App. 09/608,903
Motion detector based on the doppler principle
Inventor:
Stefan Hegnauer
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Jun 30, 2000
Inventor
Stefan Hegnauer
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.