| http://www.w3.org/ns/prov#value | - Patent US4743225 - Auto-tensioner for timing-belt - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsAn auto-tentioner of timing-belt used for apparatus such as automobiles, which comprises a body, a plunger inserted into the body, a piston inserted in the pluner and protruding from the body so as to push the timing-belt, and a spring at the
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