Denka Kogyo Kabushiki Kaisha

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Device for filling up of recess left in concrete wall after removal
- Patent number 4,905,429
- Issue date Mar 6, 1990
- Denka Kogyo Kabushiki Kaisha
- Takuo Fukushima
- E04 - BUILDING