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isahttp://webisa.webdatacommons.org/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
n5freepatentsonline.
Subject Item
isa:133515627
rdf:type
prov:Entity
prov:value
Although many attempts have been made to protect the base materials (usually steel or steel alloys) of the aforementioned and other equipment from the aforementioned corrosive or abrasive environments or both, expedients such as glass, plastic and rubber coatings or linings have largely proven to be unsatisfactory.
prov:wasQuotedFrom
n5:com
Subject Item
isap:339108597
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isa:133515627