Sakamoto; Masahisa

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Nara, JP

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Patents Grantslast 30 patents

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Synthetic resin material, particularly surface material for phonogr...
- Patent number 4,435,802
- Issue date Mar 6, 1984
- Sakamoto; Masahisa
- Masahisa Sakamoto
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL