Weiss; Erwin M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Weiss; Erwin M..The latest application filed is for "ear wax barrier and acoustic attenuator for a hearing aid".
- Weiss; Erwin M. - Northbrook IL
- Weiss; Erwin M. - Chicago IL
- Weiss; Erwin M. - Cicero IL
| Patent | Date |
|---|---|
| Ear wax barrier and acoustic attenuator for a hearing aid Grant 4,972,488 - Weiss , et al. November 20, 1 | 1990-11-20 |
| Ear seal Grant 3,865,998 - Weiss , et al. February 11, 1 | 1975-02-11 |
| Improved Receiver Assembly Incorporating Acoustical Enclosure For Receiver Grant 3,812,300 - Brander , et al. May 21, 1 | 1974-05-21 |
| Miniature Hearing Aid Structure Grant 3,783,201 - Weiss , et al. January 1, 1 | 1974-01-01 |
| Directional Responsive Hearing Aid Grant 3,665,121 - Weiss May 23, 1 | 1972-05-23 |
| Hearing Aid Construction Utilizing A Vented Transducer Compartment For Reducing Feedback Grant 3,665,122 - Weiss May 23, 1 | 1972-05-23 |
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