Gratzmuller; Claude A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Gratzmuller; Claude A..The latest application filed is for "three-way hydraulic valve".
- Gratzmuller; Claude A. - 75116 Paris FR
- Gratzmuller; Claude A. - 75016 Paris FR
| Patent | Date |
|---|---|
| Three-way hydraulic valve Grant 4,794,950 - Gratzmuller January 3, 1 | 1989-01-03 |
| Oleopneumatic control system for electric circuit-breakers Grant 4,669,265 - Gratzmuller June 2, 1 | 1987-06-02 |
| Hydraulic system for simultaneous control, especially for the control of electric circuit breakers Grant 4,243,855 - Gratzmuller January 6, 1 | 1981-01-06 |
| Hydraulic control system for electric circuit-breakers Grant 4,204,461 - Gratzmuller May 27, 1 | 1980-05-27 |
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