Michel Perrot

Follow

Person

Collan, FR

People

Patents Grantslast 30 patents

Information Patent Grant
Laser welded head drum for VCR
- Patent number 6,961,220
- Issue date Nov 1, 2005
- Thomson Licensing
- Philippe Berthaud
- G11 - INFORMATION STORAGE
Information Patent Grant
Head drum with magnetic mounting of rotary transformer
- Patent number 6,922,315
- Issue date Jul 26, 2005
- THOMSON Licensing S.A.
- Philippe Berthaud
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Head drum with dynamic gap adjustment
- Publication number 20040130829
- Publication date Jul 8, 2004
- Philippe Berthaud
- G11 - INFORMATION STORAGE
Information Patent Application
Laser welding for drum base
- Publication number 20020122277
- Publication date Sep 5, 2002
- Philippe Berthaud
- G11 - INFORMATION STORAGE