Adolf Ahrens

Follow

Person

Hauslingen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Film with a security feature, a process for the production thereof...
- Patent number 6,364,363
- Issue date Apr 2, 2002
- Wolff Walsrode AG
- Olaf Stöber
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Film with protective feature, a method of producing it and also its...
- Patent number 6,346,321
- Issue date Feb 12, 2002
- Wolff Walsrode AG
- Olaf Stöber
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS