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Manabu Hirakawa
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Niihari-gun, JP
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Patents Grants
last 30 patents
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Patent Grant
Welding method, welding device, welded joint, and welded structure
Patent number
7,005,607
Issue date
Feb 28, 2006
Hitachi Construction Machinery Co., Ltd.
Toru Takatani
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
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Patent Application
Welding method, welding device, welded joint, and welded structure
Publication number
20040074885
Publication date
Apr 22, 2004
Toru Takatani
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR