but continued to produce a tractor, the 8N, incorporating Ferguson's inventions, the patents on almost all of which had not yet expired, and Ferguson was left without a tractor to sell in North America. Ferguson's reaction was a lawsuit demanding compensation for damage to his business and for Ford's illegal use of his designs. The case was settled out of court in April 1952 for just over $9 million. The court case cost him about half of that and a great deal of stress and ill health. By 1952, most of the important Ferguson patents had expired, and this allowed Henry Ford II to claim that the case had not restricted Ford's activities too much. It follows that all the world's other tractor manufacturers could also use Ferguson's inventions, which they duly did. A year later Ferguson merged with Massey Harris to become Massey-Harris-Ferguson Co., later Massey Ferguson. Standard Motor Company As a consequence of Dagenham's failure to make the tractors, Harry Ferguson made a deal with Sir John Black of the Standard Motor Company to refit their armaments factory at Banner Lane, Coventry. Production of the latest Ferguson tractor, the TE20, started in the autumn of 1946, over 20,800 TEs being built by the end of 1947. To fill the gap in Ferguson's sales in the US, thousands of TEs were shipped over from England. Harry Ferguson Inc Production of a US version, the TO20, started at a new plant, owned by Harry Ferguson Inc, in October 1948, leaving the UK plant to supply the rest of the world. Ferguson's research division went on to develop various cars and tractors, including the first Formula One four-wheel-drive car (see Ferguson Research Ltd.). Four wheel drive systems Ferguson's four wheel drive system, utilising an open centre differential gear, was used in Formula 1 race cars and in the Range Rover and later in constant four-wheel-drive Land Rovers. Death Ferguson died at his home at Lower Swell in 1960, as the result of a barbiturate overdose; the inquest was unable to conclude whether this had been accidental or not. Memorials and recognition A blue plaque commemorating Ferguson is mounted on the Ulster Bank building in Donegall Square, Belfast, the former site of his showroom. A granite memorial has been erected to Ferguson's pioneering flight on the North Promenade, Newcastle, and a full-scale replica of the Ferguson monoplane and an early Ferguson tractor