Hakkarainen; Reijo
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hakkarainen; Reijo.The latest application filed is for "key and lock device".
- Hakkarainen; Reijo - Joensuu FI
| Patent | Date |
|---|---|
| Key and lock device Grant 7,099,474 - Liden , et al. August 29, 2 | 2006-08-29 |
| Cylinder lock Grant 5,205,143 - Hakkarainen , et al. April 27, 1 | 1993-04-27 |
| Door lock Grant 4,902,053 - Hakkarainen , et al. February 20, 1 | 1990-02-20 |
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