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In 1910,”Caterpillar” was registered as a trademark. In 1930,Caterpillar begins producing its first diesel tractor model – the Caterpillar Diesel Sixty Tractor. In 1954,Caterpillar introduces the D9 Tractor. In 1970,Caterpillar sales outside of the U.S. are greater than those inside the U.S. for the first time. In 1972,Caterpillar introduces its first hydraulic excavator – the …

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