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Johann Siebels

VA Volkswagenwerk Ag: 2 patents #3 of 63Top 5%
Overall (1982): #11,624 of 81,411Top 15%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4362471 Article, such as a turbine rotor and blade which comprises a first zone of a nonoxide ceramic material and a second zone of a softer material Manfred Langer 1982-12-07
4335998 Ceramic-metal assembly 1982-06-22