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System for confining bedding sand in interlocking concrete block pavement by geocells, comprises a layered structure, for interlocking concrete block pavement, with an unconfined bedding layer which is set on top of base layer set on top of subgrade layer with blocks and joining sand as a top layer 2023-07-21
Hydraulic controlled rotary tiller transmission system for use with tractor, has steering unit comprising steering cylinders operated at high and low revolutions per minute, where system is configured to achieve variable step less speed in rotary tiller by step up or step down of speed of tiller 2022-09-30