The Melroe brothers, of Melroe Manufacturing Company in Gwinner, North Dakota, purchased the rights to the Keller loader in 1958 and hired the Kellers to continue refining their invention. As a result of this partnership, the M-200 Melroe self-propelled loader was introduced at the end of 1958. It featured two independent front-drive wheels and a rear caster wheel, a 12.9 hp (9.6 kW) engine and a 750-pound (340 kg) lift capacity. Two years later they replaced the caster wheel with a rear axle and introduced the M-400, the first four-wheel, true skid-steer loader.[2] The M-440 was powered by a 15.5 hp (11.6 kW) engine and had an 1,100-pound (500 kg) rated operating capacity. Skid-steer development continued into the mid-1960s with the M600 loader.
Vendo implemento retroexcavadora Marca el leon modelo 270, está prácticamente sin uso, totalmente nueva. Tiene enganche rápido. valido para cualquier minicargadora o fácil de acoplar a tractor. Similar a optimal terraco t 300 Jcb case 3cx 4cx 4x4 doble New Holland Komatsu Wb 91 93 97 r r2 r5 Caterpillar cat Bobcat 580 Sk Super k le g f r Fai Masey ferguson mista 428 432 438 Komatsu tractor pala cazo ahoyadora zanjadora 110 mixta retro
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