Upper thread tension control device for sewing machines

CN309131109SActive Publication Date: 2025-02-21NSD
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Patent Information

Application Number
CN202430092175.4
Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Priority Date
2023-08-31
Filing Date
2024-02-23
Publication Date
2025-02-21
Estimated Expiration
2039-02-23

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Abstract

1. The name of the product of this design: Upper thread tension control device for sewing machine. 2. Purpose of the product with this design: The product with this design is a thread tension control device for a sewing machine. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: Changing state diagram 1.
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