Yoshiaki Tonomura

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Hachioji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Automatic thread tension control device of sewing machine
- Patent number 4,301,757
- Issue date Nov 24, 1981
- Janome Sewing Machine Co. Ltd.
- Yoshiaki Tonomura
- D05 - SEWING EMBROIDERING TUFTING