Library book placing device
A library book placing device comprises an inserting part, a pushing channel, a temporary storage area and a pushing part. The inserting part comprises two inserting pieces; when the inserting piecesare closed with each other, the front ends of the inserting parts are thinner, so that the inserting...
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Hauptverfasser: | , , , , , |
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Format: | Patent |
Sprache: | chi ; eng |
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Online-Zugang: | Volltext bestellen |
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