Edison's Litigation continued for a number of years. Eventually on 6 October 1889, a judge ruled that Edison's electric light improvement claim for "a filament of carbon of high resistance" was valid.
On 10 October 1889, Isaac R Johnson, an African-American inventor, lodged his patent for a folding bicycle – the first with a recognizably modern diamond frame, the pattern still used in the 21st-century bicycles.
