Integrated internal-external corner cleaning fitting

An integrated internal-external corner cleaning fitting is provided with an internal corner and an external corner; the internal corner is an inwardly concave structure, and the external corner is anoutwardly convex structure; a circular ring is disposed between the internal corner and the external...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DONG ZHIQIANG, HUANG YAOKE
Format: Patent
Sprache:chi ; eng
Schlagworte:
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