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Wenzhou Zhengyuan Electronics – 2023228104788 clip-type induction color test pen – Niu Chunjiu – 20240618 – utility model patent certificate (1)

Wenzhou Zhengyuan Electronics – 2023228104788 clip-type induction color test pen – Niu Chunjiu – 20240618 – utility model patent certificate (1)

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Car test pen (EW168 design patent)

Car test pen (EW168 design patent)

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2021307398913 — Design Patent Certificate (Stamped) (3)(1)

2021307398913 — Design Patent Certificate (Stamped) (3)(1)

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301 utility model patent

301 utility model patent

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202123141991X – certificate (new 12 utility model patent)

202123141991X – certificate (new 12 utility model patent)

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Wenzhou Zhengyuan Electronics – 2023306744585 clip-type induction color test pen – Niu Chunjiu – 20240507 – design patent certificate (1)

Wenzhou Zhengyuan Electronics – 2023306744585 clip-type induction color test pen – Niu Chunjiu – 20240507 – design patent certificate (1)

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Test pen – design patent certificate (58 design patent) (1)

Test pen – design patent certificate (58 design patent) (1)

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BJXS232766I Henan Biaoniu 400001 – invention patent certificate (1)

BJXS232766I Henan Biaoniu 400001 – invention patent certificate (1)

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2021307398913 – patent certificate (new 12 design patent) (1)

2021307398913 – patent certificate (new 12 design patent) (1)

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Wenzhou Zhengyuan Electronics – 2024305504714 test pen (1) – design patent certificate (1)

Wenzhou Zhengyuan Electronics – 2024305504714 test pen (1) – design patent certificate (1)

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Test pen – design patent certificate (58 design patent)

Test pen – design patent certificate (58 design patent)

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A multifunctional test pen repair tool certificate (301 utility model patent)

A multifunctional test pen repair tool certificate (301 utility model patent)

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