Matches in DBpedia 2015-10 for { ?s ?p "Joseph Aspdin (December? 1778 – 20 March 1855) was an English cement manufacturer who obtained the patent for Portland cement on 21 October 1824."@en }
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- Joseph_Aspdin abstract "Joseph Aspdin (December? 1778 – 20 March 1855) was an English cement manufacturer who obtained the patent for Portland cement on 21 October 1824.".
- Joseph_Aspdin comment "Joseph Aspdin (December? 1778 – 20 March 1855) was an English cement manufacturer who obtained the patent for Portland cement on 21 October 1824.".