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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In U.S. Pat. No. 3,453,333, M. H. Litt et al. disclose fluorinated ethers containing at least one halogen substituent other than fluorine.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com