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US3991447A Slider for sliding clasp fastener 失效
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Slider for sliding clasp fastener
摘要:
A slider for a sliding clasp fastener is assembled essentially with a slider body, a pull tab, a cap-like yoke and/or means of locking the slider. The yoke has its lower longitudinal edges fitted into grooves or indents formed in the slider body, and inter-fitting portions are fused together as by an ultrasonic processing into an integral joint.
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