Grandt; Andre
Patent Applications and Registrations
Patent applications and USPTO patent grants for Grandt; Andre.The latest application filed is for "hifi audio tube amplifier".
- Grandt; Andre - Wedemark N/A DE
| Patent | Date |
|---|---|
| Headset and headphone Grant 10,141,494 - Kuhtz , et al. Nov | 2018-11-27 |
| Headphones Grant 9,900,683 - February 20, 2 | 2018-02-20 |
| Earpiece and headset Grant 9,781,501 - Grandt , et al. October 3, 2 | 2017-10-03 |
| Hifi Audio Tube Amplifier App 20170085227 - Kratzer; Dirk ; et al. | 2017-03-23 |
| Headphones App 20160286320 - Stein (ne Schulze); Elmar ; et al. | 2016-09-29 |
| Headset and headphone Grant 9,373,317 - Streitenberger , et al. June 21, 2 | 2016-06-21 |
| Handset or Headset App 20160014495 - GRANDT; Andre ; et al. | 2016-01-14 |
| Headset And Headphone App 20130322642 - Streitenberger; Martin ; et al. | 2013-12-05 |
| Helmet and apparatus for active noise suppression Grant 8,391,530 - Grandt , et al. March 5, 2 | 2013-03-05 |
| Headphones for connection to an external active noise compensation device Grant 8,243,942 - Grandt August 14, 2 | 2012-08-14 |
| Headset And Headphone App 20120140941 - Kuhtz; Jan Peter ; et al. | 2012-06-07 |
| Converter system for an active noise compensation apparatus Grant 8,180,092 - Grell , et al. May 15, 2 | 2012-05-15 |
| Helmet And Apparatus For Active Noise Suppression App 20100183182 - Grandt; Andre ; et al. | 2010-07-22 |
| Converter System for an Active Noise Compensation Apparatus App 20090136055 - Grell; Axel ; et al. | 2009-05-28 |
| Headphones for Connection to an External Active Noise Compensation Device App 20090041259 - Grandt; Andre | 2009-02-12 |
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