| http://www.w3.org/ns/prov#value | - Referring now to the drawings, there is schematically shown in FIG. 5 a main portion of a differential planet gear unit according to the present invention, having basically the same construction as that of the conventional differential planet gear unit shown in FIGS. 1 to 4, except tooth forms of gears, and thus the description of the same portions as those of the conventional differential planet
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