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- Registered Patent (No.30-0649013)
- Trademark Registration (No.40-0887020)
- Copyrightâ“’4thdesign all rights reserved.
- 4thdesign logo is a registered trademarks of 4thdesign in Korea and/or other countries.
- Unauthorized use is responsible for legal action.
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Installation method of T-type 2 is the same as T-type 1 except for button section.
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- Registered Patent (No.30-0649013)
- Trademark Registration (No.40-0887020)
- Copyrightâ“’4thdesign all rights reserved.
- 4thdesign logo is a registered trademarks of 4thdesign in Korea and/or other countries.
- Unauthorized use is responsible for legal action.
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