F04B 7/0076
Piston machines or pumps characterised by having positively-driven valving {the members being actuated by electro-magnetic means}
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Edits on 5 Mar, 2022
Golden AI
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Infobox (+4 properties)
Description (+129 characters)
F04B 7/0076
Piston machines or pumps characterised by having positively-driven valving {the members being actuated by electro-magnetic means}
Infobox
Classification Type
Parent classification
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