Jochen Mueller

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Munich, DE

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Patents Grantslast 30 patents

Information Patent Grant
Hearing aid to be worn in the ear
- Patent number 5,257,315
- Issue date Oct 26, 1993
- Siemens Aktiengesellschaft
- Christof Haertl
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hearing aid having electrical contact means arranged in a battery c...
- Patent number 5,188,540
- Issue date Feb 23, 1993
- Siemens Aktiengesellschaft
- Christof Haertl
- H04 - ELECTRIC COMMUNICATION TECHNIQUE