Havens; Richard Calvin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Havens; Richard Calvin.The latest application filed is for "q switching microwave oscillator".
- Havens; Richard Calvin - Scottsdale AZ
| Patent | Date |
|---|---|
| Q switching microwave oscillator Grant 4,053,854 - Havens October 11, 1 | 1977-10-11 |
| Negative resistance high-Q-microwave oscillator Grant 3,913,035 - Havens October 14, 1 | 1975-10-14 |
| Concentric Line Negative Resistance Oscillator Grant 3,708,761 - Havens January 2, 1 | 1973-01-02 |
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