| 11. | The " Fiat 60 " crawler tractor, replacing the old Fiat 50 models, was launched in 1956.
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| 12. | After World War II, rural municipalities equipment such as crawler tractors, scrapers and graders could be purchased.
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| 13. | The "'Linn tractor "'is a heavy duty civilian half-track or crawler tractor invented by Holman Harry Linn.
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| 14. | The "'Caterpillar Sixty "'was a crawler tractor manufactured by the Caterpillar Tractor Company from 1925 until 1931.
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| 15. | Although the total sales volume in crawler tractors fell 5 . 1 per cent, the company's profitability increased.
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| 16. | The Dorman 4JO engines was also used in the new model 1922 40 hp Clayton & Shuttleworth'chain-rail'crawler tractors.
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| 17. | The UT6, built as a smaller version of the UT4, became the basis, in 1936, for the C35 a crawler tractor.
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| 18. | After the war they exploited this to develop a civilian crawler tractor that could be sold for the peacetime reconstruction work.
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| 19. | In the same year, the company also launched the " Fiatagri 180-55 " crawler tractor, with a revolutionary hydrostatic transmission system.
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| 20. | The elements are a M970 refueling truck and a Medium Crawler Tractor bulldozer, at the end of an AM-2 airfield matting runway.
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