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| Number | Title | Issue Date |
| 7349551 | Lapel microphone with push to talk switch A microphone-speaker assembly includes a housing, a microphone, a speaker, and a push-to-talk switch. The housing supports the speaker for movement between a first position in which the switch is not activated and a second position in which the switch is activated. ... | 03/25/2008 |
| 7302072 | Electronic device mount for mask An adapter assembly for releasably supporting lapel mic on a mask includes a mask adapter for mounting on the mask, and a lapel adapter for mounting on the lapel mic. The lapel adapter is releasably connectable with the mask adapter to support the lapel mic on the m... | 11/27/2007 |
| 7221966 | Wireless communication systems for masks or helmets Various types of wireless communication systems for masks or helmets can be mounted externally or internally on a mask. Different types of microphones can be employed, for example, a bone-conducting microphone or a directional microphone. Ear speakers mounted at var... | 05/22/2007 |
