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n4google.
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Subject Item
isa:85518951
rdf:type
prov:Entity
prov:value
The device is an integrally molded body of pliable elastomeric material universally fitted to most tongue sizes when the tongue is inserted into a rearwardly-opening central vacuum chamber, it displaces the air in the chamber.
prov:wasQuotedFrom
n4:com
Subject Item
isap:489870793
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isa:85518951