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| Number | Title | Issue Date |
| 7146199 | Cordless digital audio headphone A cordless digital audio headphone is disclosed. The headphone includes a pair of earphones connected to a headband. The earphones provide audible signals. The headphone also includes a memory unit positioned on the headband for containing digitally stored audio inf... | 12/05/2006 |
| 6999732 | Transceiver adapted for mounting upon a strap of facepiece or headgear A transceiver adapted for mounting upon straps of a gas mask or a helmet is smaller in size and weight, and therefore excellent in fittingness, which makes handling of the transceiver less cumbersome even when a user wears the gas mask or the helmet. The transceiver... | 02/14/2006 |
| 5677948 | Cordless portable hands-free telephone A cordless portable telephone comprises a main apparatus (2) combining a receiver, a transmitter, an antenna (3) and a keyboard for entering a called number, a microphone and an earpiece, all attached to, or supported from a collar passing around the neck... | 10/14/1997 |
| 5426706 | Remote simultaneous interpretation system A remote simultaneous interpretation system particularly suitable for oral communication between a doctor and patient who do not speak a common language includes a user station equipped with a first and second headsets and microphones, a remote simultaneo... | 06/20/1995 |
| 5210532 | Baby monitor receiver having indicator display and dual position clip A baby monitor receiver is provided for use in combination with a transmitter unit. The receiver includes a plurality of LED's positioned along the front upper edge of a housing for providing a visual indication of signals received by the receiver. The LE... | 05/11/1993 |
| 4491699 | Communication apparatus for hostile environments A dual communication system is disclosed including a microphone for mounting for use by a wearer of a protective face mask, the output signal from the microphone being communicated to both a speaker system for local, audible broadcast and to a transmitter... | 01/01/1985 |
