| http://www.w3.org/ns/prov#value | - 31)}Informative references Attention is drawn to the following places, which may be of interest for search: Suction control more generally A61M 1/0031 A61M 1/0043{by changing the section of the line}Definition statement This subgroup covers: Handpieces with means for varying suction manually by changing the cross section of the line, e.g. changing the cross section of the line by pinching tubing A
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