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Friction stir welding apparatus having shoulder unit
- Patent number : No. 10-2120389
- Application date : 2018.10.24
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Certificate of SQ
- Certification date : 2023.09.15
- Effective date : 2024.09.30
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Certificate of Registration
- Expiration date : 2024.11.16
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Certification of the corporate research institute
- Date of first recognition : 2020.12.03
- Report date : 2023.08.29
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Certificate of Venture Enterprise
- Expiration period : 2023.08.09 ~ 26.08.08