Oswald Schwerdtfeger

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Cologne, DT

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Patents Grantslast 30 patents

Information Patent Grant
Reinforced article and method of making the same
- Patent number 4,012,824
- Issue date Mar 22, 1977
- Felten & Guilleaume Kabelwerke AG
- Walther Dawihl
- B22 - CASTING POWDER METALLURGY