Waldman; Herbert H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Waldman; Herbert H..The latest application filed is for "muting circuit for telephone answering machine".
- Waldman; Herbert H. - Brooklyn NY
| Patent | Date |
|---|---|
| Muting circuit for telephone answering machine Grant 4,941,166 - Waldman , et al. July 10, 1 | 1990-07-10 |
| Single line telephone call forwarding device Grant 4,670,900 - Waldman June 2, 1 | 1987-06-02 |
| Telephone call forwarding device Grant 4,626,630 - Waldman December 2, 1 | 1986-12-02 |
| Energy saving control circuit for a light switch and a method therefor Grant 4,540,984 - Waldman September 10, 1 | 1985-09-10 |
| Hold circuit for telephone system Grant RE31,643 - Waldman August 7, 1 | 1984-08-07 |
| Telephone call restricting apparatus Grant 4,251,692 - Waldman February 17, 1 | 1981-02-17 |
| Hold circuit for telephone system Grant 4,243,844 - Waldman January 6, 1 | 1981-01-06 |
| Hold circuit for telephones Grant 4,001,520 - Waldman , et al. January 4, 1 | 1977-01-04 |
| Coding Means For Telephone Answering Device Grant 3,825,687 - Waldman July 23, 1 | 1974-07-23 |
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