Central position detection mechanism for pipe-in-pipe type heat preservation pipe before plugging (Chinese)
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2021
- Patent / Electronic Resource
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Title:Central position detection mechanism for pipe-in-pipe type heat preservation pipe before plugging
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Additional title:管中管式保温管封堵前中心位置检测机构
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Patent number:CN112497627
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Publication date:2021-03-16
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Type of media:Patent
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Type of material:Electronic Resource
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Language:Chinese
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