Iwan Kahn

Brüttisellen

Trademarks, designs and patents

Sanduhr, Standuhr

Swiss design · 119368 · Holder

Deleted
Zeitanzeigevorrichtung

Swiss patent · CH676187 · Holder, Inventor

Deleted
Sonnenuhr

Swiss patent · CH667969 · Holder, Inventor

Deleted
Sonnenuhr

Swiss patent · CH552239 · Holder

Deleted