CPC Subgroup
F01L 3/20 Shapes or constructions of valve members, not provided for in preceding subgroups of this group
Full Title
Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof > Shapes or constructions of valve members, not provided for in preceding subgroups of this group
1 direct subcode
Child Classifications
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