CHRISTOPH DURAND

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GIEN, FR

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Patents Grantslast 30 patents

Information Patent Grant
Elevator door system
- Patent number 8,448,751
- Issue date May 28, 2013
- Otis Elevator Company
- Christian G. Tonna
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Elevator door system
- Patent number 7,246,688
- Issue date Jul 24, 2007
- Otis Elevator Company
- Christian G. Tonna
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
Elevator door system
- Publication number 20060196733
- Publication date Sep 7, 2006
- Christian G. Tonna
- B66 - HOISTING LIFTING HAULING
Information Patent Application
ELEVATOR DOOR SYSTEM
- Publication number 20020003065
- Publication date Jan 10, 2002
- CHRISTIAN G. TONNA
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES