Allen; Clayton H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Allen; Clayton H..The latest application filed is for "nonlinear passive acoustic filtering".
- Allen; Clayton H. - Cambridge MA
- Allen; Clayton H. - Wellesley MA
| Patent | Date |
|---|---|
| Nonlinear passive acoustic filtering Grant 4,441,576 - Allen April 10, 1 | 1984-04-10 |
| Vibration damping method and means having non-contacting sound damping means Grant 4,323,145 - Allen April 6, 1 | 1982-04-06 |
| Retaining fluids Grant 4,009,717 - Allen March 1, 1 | 1977-03-01 |
| Acoustical Ear Muff With Cone-type Cushions Grant 3,571,813 - Allen March 23, 1 | 1971-03-23 |
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