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A utility model patent certificate for a shaftless extrusion hot melt drill bit

A utility model patent certificate for a shaftless extrusion hot melt drill bit

Awarded: Intellectual Property Office

Certificate: No. 15875348

Validity period: Ten years from August 2021

A utility model patent certificate for a shaftless extrusion hot melt drill bit

A utility model patent certificate for a friction high-temperature hot melt drill bit

A utility model patent certificate for a friction high-temperature hot melt drill bit

Awarded: Intellectual Property Office

Certificate: No. 15703556

Validity period: Ten years from August 2021

A utility model patent certificate for a friction high-temperature hot melt drill bit

Design Patent Certificate for Drill Bit (Hot Melt Series) Appearance

Design Patent Certificate for Drill Bit (Hot Melt Series) Appearance

Awarded: Intellectual Property Office

Certificate: No. 6995329

Validity period: Fifteen years from July 2021

Design Patent Certificate for Drill Bit (Hot Melt Series) Appearance

A utility model patent for a high-temperature extrusion drill bit without cutting edge or chips

A utility model patent for a high-temperature extrusion drill bit without cutting edge or chips

Awarded: Intellectual Property Office

Certificate: No. 14946237

Validity period: Ten years from July 2021

A utility model patent for a high-temperature extrusion drill bit without cutting edge or chips

Huay Huayi Trademark Registration Certificate. jpg

Huay Huayi Trademark Registration Certificate. jpg

Awarded: Intellectual Property Office

Certificate: No. 57145058A

Validity period: March 2022 to March 2032

Huay Huayi Trademark Registration Certificate. jpg