BELLOWS PUMP DEVICE
A control unit 6 of this bellows pump device 1 determines whether a second bellows 14 (first bellows 13) is being stretched when the first bellows (second bellows 14) has been contracted to a being-contracted state is determined, and when the determination result is affirmative, performs pressure-ra...
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Format: | Patent |
Sprache: | eng ; fre ; jpn |
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