Bergstein; Frank D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Bergstein; Frank D..The latest application filed is for "dual fluid rotor apparatus".
- Bergstein; Frank D. - Cincinnati OH
| Patent | Date |
|---|---|
| Dual fluid rotor apparatus Grant 5,333,996 - Bergstein * August 2, 1 | 1994-08-02 |
| Fluid flow driven engine Grant 4,960,363 - Bergstein October 2, 1 | 1990-10-02 |
| Carton with self-sealing reclosable end closure Grant 4,032,060 - Bergstein June 28, 1 | 1977-06-28 |
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