Lanman; Richard Fritz
Patent Applications and Registrations
Patent applications and USPTO patent grants for Lanman; Richard Fritz.The latest application filed is for "passive audio ear filters with multiple filter elements".
- Lanman; Richard Fritz - New York NY
| Patent | Date |
|---|---|
| Passive audio ear filters with multiple filter elements Grant 9,131,308 - Kraft , et al. September 8, 2 | 2015-09-08 |
| Passive Audio Ear Filters With Multiple Filter Elements App 20150208170 - Kraft; Noah ; et al. | 2015-07-23 |
| Passive Acoustical Filters Incorporating Inserts That Reduce The Speed Of Sound App 20150206524 - Kraft; Noah ; et al. | 2015-07-23 |
| Passive acoustical filters incorporating inserts that reduce the speed of sound Grant 9,087,506 - Kraft , et al. July 21, 2 | 2015-07-21 |
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