Vacuum bottle with replaceable single-layer middle-section large-head cap
The utility model discloses a single-layer middle-section large-head cap replaceable vacuum bottle which comprises an outer bottle, an inner bottle arranged in the outer bottle, a middle section arranged at a bottle opening of the outer bottle, a piston arranged in the inner bottle and a pump body a...
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Format: | Patent |
Sprache: | chi ; eng |
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