Dị ka mkpa ndị ahịa si dị, dị iche iche nkọwa nke ndịda Boston ebuli n'elu ikpo okwu ụgbọ ala, ndịda Boston ebuli hydraulic nyiwe, ndịda Boston hydraulic ikpo okwu lifts, ndịda Boston ụgbọ-n'ịnyịnya ikuku ọrụ nyiwe nwere ike ahaziri.Nabata ọhụrụ na ochie ahịa na bia kparita uka.