Screw type built-in anti-theft lock for bicycle
A spiral type concealed anti-theft lock for bicycle is provided, which comprises a lock body, a lock barrel, a clamp, and a tamper-free pin, wherein, a cylindrical internal thread hole is machined at the center of the lock body, the spring lock barrel is in cylindrical form, with thread on surface,...
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Format: | Patent |
Sprache: | chi ; eng |
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