Roger Edward

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Berkshire, GB

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Patents Grantslast 30 patents

Information Patent Grant
Copy protection of digital audio compact discs
- Patent number 6,839,312
- Issue date Jan 4, 2005
- Macrovision Corporation
- Richard A A Heylen
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
The copy protection of digital audio compact discs
- Publication number 20020159591
- Publication date Oct 31, 2002
- Richard AA Heylen
- G11 - INFORMATION STORAGE
Information Patent Application
Copy protection of digital audio compact discs
- Publication number 20020159355
- Publication date Oct 31, 2002
- Richard A A Heylen
- G11 - INFORMATION STORAGE