Widmer, Walter Rudolf

CH-8155 Niederhasli

Trademarks, designs and patents

Chiffrier/Dechiffrierverfahren

European patent · EP0173647 · Inventor

Deleted
Chiffrier-Dechiffriergerät

European patent · EP0011050 · Inventor

Deleted
Kryptogrammwandler

European patent · EP0002478 · Inventor

Deleted