CB

Claude Barraud

SS Schlumberger Industires, S.A.: 2 patents #1 of 21Top 5%
Overall (1989): #29,931 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4873721 Device for starting charging in a pay phone — 1989-10-10
4852155 Systeme d'authentification analogique reciproque entre un terminal et une ligne de transmission — 1989-07-25