Gustave Ray

Etagnières

Trademarks, designs and patents

Briquet solaire

Swiss patent · CH634906 · Holder, Inventor

Deleted
Briquet

Swiss patent · CH611997 · Holder, Inventor

Deleted
Four solaire portatif

Swiss patent · CH598555 · Holder, Inventor

Deleted
Four solaire portatif

Swiss patent · CH597575 · Holder, Inventor

Deleted