1980 Event ZBZ Sangha registered after 5 years of administrative hassles in Warsaw 1959 Event 500,000th Dutch TV set registered 1904 Event Flexible Flyer trademark registered 1900 Event Trademark "Escalator" registered by Otis Elevator Co 1878 Event Vaseline is 1st sold (registered trademark for petroleum jelly) 1873 Event "Celluloid" registered as a trademark 1855 Event Congress authorizes registered mail
