HIT predisposes to thrombosis, the abnormal formation of blood clots inside a blood vessel, and when thrombosis is identified the condition is called heparin-induced thrombocytopenia and thrombosis (HITT).
When and where was the fork invented ? Helen Brown, Auckland New Zealand According to the very entertaining book Ancient Inventions by Peter James and Nick Thorpe, the fork was probably invented in the Eastern Roman Empire of Byzantium where forks were first used during the 4th century AD.
The first tractor that was designed and produced by the Caterpillar Tractor Co. that was not based on a previous Holt or Best model was its Model Twenty, which went into production at San Leandro in 1927. Production of the Twenty was started at East Peoria, Illinois, in 1928.aterpillar replaced the concept of a pipelayer attachment on a crawler tractor with the industry's first integrated pipelayer machine, the No. 583 Pipelayer in 1955. The following table shows Caterpillar's pipelayers from 1955 to about 1960.