Sipkema; Marcus Karel
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sipkema; Marcus Karel.The latest application filed is for "hearing aid glasses using one omni microphone per temple".
- Sipkema; Marcus Karel - Amhem NL
- Sipkema; Marcus Karel - Arnhem NL
| Patent | Date |
|---|---|
| Hearing aid glasses using one omni microphone per temple Grant 8,139,801 - Sipkema , et al. March 20, 2 | 2012-03-20 |
| Connector assembly for connecting an earpiece of a hearing aid to glasses temple Grant 7,735,996 - van der Zwan , et al. June 15, 2 | 2010-06-15 |
| Spectacle hearing aid Grant 7,609,842 - Sipkema , et al. October 27, 2 | 2009-10-27 |
| Hearing Aid Glasses Using One Omni Microphone Per Temple App 20090252360 - Sipkema; Marcus Karel ; et al. | 2009-10-08 |
| Spectacle hearing aid App 20070098192 - Sipkema; Marcus Karel | 2007-05-03 |
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