<http://webisa.webdatacommons.org/16762110>	<http://www.w3.org/ns/prov#value>	"In this instance, deposition of particulate matter 155, such as soot and the like, in the porosity within porous walls 120 is prevented." .
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<http://webisa.webdatacommons.org/16762110>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freshpatents.com> .