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| Number | Title | Issue Date |
| 6718034 | Headset interface The present invention concerns an adaptive headset interface for amplification and adjustment of signals between a random headset and a random terminal. The adaptive headset interface comprises digital signal processors, and is further equipped with a modem block ov... | 04/06/2004 |
| 6434251 | Headset with adjustable earhook A telephone headset apparatus is disclosed. This headset apparatus includes a body having a microphone at one end and a transducer at the opposite end, an earhook, for attaching the apparatus to the ear of the operator, and a mechanism, contained within t... | 08/13/2002 |
| 6078675 | Communication system for users of hearing aids Communication system for users of hearing aids in connection with the use of a mobile telephone (1), and where the hearing aid user (5) wears at least one hearing aid (4). The system comprises a headset (3) coupled to the mobile telephone, said headset co... | 06/20/2000 |
| 5757944 | Headset with adjustable earhook A telephone headset apparatus is disclosed. This headset apparatus includes a body having a microphone at one end and a transducer at the opposite end, an earhook, for attaching the apparatus to the ear of the operator, and a mechanism, contained within t... | 05/26/1998 |
| 5608797 | On-line indicator for multipurpose headset amplifier An on-line indicator (40) for the multipurpose headset amplifier comprises a holder in two parts (45) arranged to be snapped onto the ascending, holder (10) which is mounted on the housing (5) of the multipurpose headset amplifier. The on-line indicator h... | 03/04/1997 |
| 5303308 | Audio frequency signal compressing system An audio frequency compressing system for amplifying an input signal to produce a power output signal while removing high-level signals which could harm a listener. Gain control in the feedback path of an amplifier includes both a gain controller circuit ... | 04/12/1994 |
| 5058155 | Multipurpose headset amplifier A multipurpose headset amplifier for the connection of a headset (11) to a telephone instrument comprises a housing (5) having an ascending, thready holder (10) for a headset (11) and connection jacks (21, 22, 23) for the headset (11), the telephone instr... | 10/15/1991 |
| 4893344 | Headset having a post auricle mount and arranged to be worn on a person's outer ear A headset (1) with sound receiving microphone (6) and sound reproducing transducer (3) is arranged to be worn on a person's outer ear (2). For this purpose, the headset has a post auricle mount (9) with a lengthwise adjustable stabilizer (10) behind the e... | 01/09/1990 |
