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isaphttp://webisa.webdatacommons.org/prov/
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provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:161039512
rdf:type
prov:Entity
prov:value
A tool used to penetrate ductile sheet metal as the initial penetration in preparation for the attachment or installation of ducting and piping and particularly to forming the initial penetration in sheet metal sheet or ducting from which an opening is made for the attachment of lateral, feed, supply or return duct pipe in heating and air conditioning systems and other process or manufacturing sys
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n4:fr
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isa:161039512