Tonna; Christian G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Tonna; Christian G..The latest application filed is for "elevator door system".
- Tonna; Christian G. - Acheres FR
- Tonna; Christian G. - New Britain CT
| Patent | Date |
|---|---|
| Elevator door system Grant 8,448,751 - Tonna , et al. May 28, 2 | 2013-05-28 |
| Elevator door system Grant 7,246,688 - Tonna , et al. July 24, 2 | 2007-07-24 |
| Elevator door system App 20060196733 - Tonna; Christian G. ; et al. | 2006-09-07 |
| Elevator Door System App 20020003065 - TONNA, CHRISTIAN G. ; et al. | 2002-01-10 |
| Elevator car door lock Grant 5,139,112 - Tonna , et al. August 18, 1 | 1992-08-18 |
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