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Yah-De Co., Ltd. Patents
Yah-De Co., Ltd.
Tainan, TW
No. of patents:

Patent Number Title Of Patent Date Issued
5823578 Extensible metallic tube structure October 20, 1998
An extensible metallic tube structure has a big hollow tube, an engaging head, a small hollow tube, a locating column, an O-shaped ring, a washer, a C-shaped fixing device, and a controlling sleeve. The big hollow tube having an inwardly indented groove at the upper periphery is engaged

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