Matches in DBpedia 2016-04 for { ?s ?p "Joseph Richard Winters (August 29, 1824 – November 29, 1916) was an African-American abolitionist and inventor who, on May 7, 1878 received U.S. Patent number 203,517 for a wagon-mounted fire escape ladder. On April 8, 1879, he received U.S. Patent number 214,224 for an \"improvement\" on the ladder. On May 16, 1882, he received U.S."@en }
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- Joseph_Winters comment "Joseph Richard Winters (August 29, 1824 – November 29, 1916) was an African-American abolitionist and inventor who, on May 7, 1878 received U.S. Patent number 203,517 for a wagon-mounted fire escape ladder. On April 8, 1879, he received U.S. Patent number 214,224 for an \"improvement\" on the ladder. On May 16, 1882, he received U.S.".