Iwao Ueda

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for continuously producing tube having helical grooves in...
- Patent number 4,766,751
- Issue date Aug 30, 1988
- Hamana Iron Works Co., Ltd.
- Iwao Ueda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Apparatus for continuously producing tube having helical grooves in...
- Patent number 4,735,071
- Issue date Apr 5, 1988
- Hamana Iron Works Co., Ltd.
- Iwao Ueda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...