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Bestex Kyoei Co., Ltd.
| Bestex Kyoei Co., Ltd. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090152898 | Pipe member and method of manufacturing the same - To provide a pipe member composed of a small-diameter metal pipe and a large-diameter metal pipe integrated via a double pipe structure part. A diameter expanding punch | 06-18-2009 |