Drebin; Kalman
Patent Applications and Registrations
Patent applications and USPTO patent grants for Drebin; Kalman.The latest application filed is for "muting circuit for telephone answering machine".
- Drebin; Kalman - Brooklyn NY
| Patent | Date |
|---|---|
| Muting circuit for telephone answering machine Grant 4,941,166 - Waldman , et al. July 10, 1 | 1990-07-10 |
| Electrical Wafer Switch Assembly With Improved Rotor Contact Structure Grant 3,609,259 - Drebin September 28, 1 | 1971-09-28 |
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