Inventor
BIRKHOLZ ULRICH
DE6 patents
⚠️ This page may combine multiple inventors who share the name “BIRKHOLZ ULRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIEMENS AG
4 patentsUS4739512AApr 19, 1988
Hearing aid
SIEMENS AG136 citations94
US4834927AMay 30, 1989
Method and apparatus for producing an ear impression
SIEMENS AG52 citations91
US4840249AJun 20, 1989
Apparatus for srewing a cover onto a screw neck of a hearing aid
SIEMENS AG13 citations72
US4828777AMay 9, 1989
Method and apparatus for the manufacture of an otoplastic shell
SIEMENS AG15 citations71