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Wenzhou Zhengyuan Electronics – 2024305504714 test pen (1) – design patent certificate (1)
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Test pen – design patent certificate (58 design patent)
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A multifunctional test pen repair tool certificate (301 utility model patent)
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2021307398913 – patent certificate (new 12 design patent)
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Wenzhou Zhengyuan Electronics – 2024305504729 test pen (2) – design patent certificate
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Test pen – design patent certificate (stamped)
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A multi-purpose electrician repair tool_EW911 design patent certificate
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2020301730277 – design patent certificate (stamped) (1)
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Wenzhou Zhengyuan Electronics – 2024305606065 test pen (3) – design patent certificate
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A multi-purpose electrician repair tool_EW911 utility model patent details
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