Granted Patent
Utility
US 6,318,702 · App. 09/612,871
Shutoff device
Inventors:
Alfred Hettel, Axel Obermann
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Jul 10, 2000
Inventors
Alfred Hettel
Axel Obermann
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.