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n4google.
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Subject Item
isa:304587624
rdf:type
prov:Entity
prov:value
A heat exchanger of thermoplastic materials, e.g. polypropylene, comprises two spaced-apart headers interconnected by an extruded board comprising a plurality of tubular passages extending from one end of the board to the other; each header having a longitudinal groove in its exterior surface and a plurality of holes spaced along the groove, interconnecting the groove and the interior of the heade
prov:wasQuotedFrom
n4:com
Subject Item
isap:423524772
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isa:304587624