Richer; Louis
Patent Applications and Registrations
Patent applications and USPTO patent grants for Richer; Louis.The latest application filed is for "system for the payment of telephone calls in a private self-switching unit".
- Richer; Louis - 35510 Cesson-Sevigne FR
| Patent | Date |
|---|---|
| System for the payment of telephone calls in a private self-switching unit Grant 5,003,585 - Richer March 26, 1 | 1991-03-26 |
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