Fire extinguishing device
The fire extinguishing device comprises a climbing rod assembly, the climbing rod assembly comprises a first climbing rod and a second climbing rod, the bottom end of the first climbing rod and the top end of the second climbing rod are connected through a connecting disc and a bolt, a crank arm is...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Online-Zugang: | Volltext bestellen |
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