Wolf Linde is a former R&D engineer at Hohner. For more than 50 years he was contributing to many of the inventions coming out of the Hohner factory. He was also a member of the CX 12 development team. His name is included in the corresponding patent# DE 41 29 817 C1. The 65 pages catalogue “Mundharmonika Kinder” (all color prints) by Wolfgang Ott shows all the extraordinary harmonica prototypes Wolf Linde produced over five decades.
Linde Tremolo Chromatic from 1963
Linde Chromatic from 1974
The full catalogue can be ordered directly from Wolfgang Ott via e-mail.
Update:
Recently, I came across this Linde Prototype. It is not part of Wolfgang Ott’s catalogue. I assume Linde sold it of or gifted it to a catalogue or friend.
This harmonica is really an interesting construction. The reeds are accordion rather than harmonica reeds. The slider rotates inside a tube. It has one design flaw though. There is no possibility to reach/repair an inner reed. A broken reed (or even a stuck valve) would render the instrument useless. Maybe that’s why it is only a prototype…
Chromatic Harmonica History 
These look fascinating! I’d like to contact Wolfgang Ott for the catalogue – can you send me his email address?
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Actually, the link associated to his name gets you there. But in any case:
Wolfgang Ott
Tel.: 07665/7163
E-Mail: DL3WER@darc.de
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Thanks – I realised that afterwards! Just emailed him 🙂
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