Air filter
The present invention discloses a filter including an upper layer and a lower layer, and a filtering layer formed there between. The filter is made of flexible materials.
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Format: | Patent |
Sprache: | chi ; eng |
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Online-Zugang: | Volltext bestellen |
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Zusammenfassung: | The present invention discloses a filter including an upper layer and a lower layer, and a filtering layer formed there between. The filter is made of flexible materials. |
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