Nikken Sekkei Ltd.

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Osaka, JP

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Information Patent Grant
Method of foaming a foamable composition in a sealed sack
- Patent number 4,552,601
- Issue date Nov 12, 1985
- Sumitomo Corporation
- Yutaka Hirano
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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