Sheng-Chang Chang

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Chang Hua Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Method for integrally manufacturing an one-piece forged hollow cran...
- Patent number 6,266,990
- Issue date Jul 31, 2001
- William Blair Shook
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...