Spring brake
The dash-dash broken lines in the drawings depict portions of the spring brake that form no part of the claimed design. The dot-dash broken lines represent boundaries of the enlarged portions and form no part of the claimed design.
Claims
The ornamental design for a spring brake, as shown and described.
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Type: Grant
Filed: Sep 28, 2022
Date of Patent: Apr 4, 2023
Inventor: Fangping Cao (Shenzhen)
Primary Examiner: Cary M Robinson
Assistant Examiner: Adam C Mager
Application Number: 29/854,776