Granted Patent
Utility
US 6,485,007 · App. 10/141,167
Diaphragm bellows device
Inventor:
Bernhard Duelli
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: May 7, 2002
Inventor
Bernhard Duelli
Assignee (at issue)
VAT Holding 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.