FIELD: agricultural engineering. SUBSTANCE: mole has cylindrical body whose rear cover carries hinged cutters kinematically connected by means of rods with movable spring-loaded support. Cutters are made over arc of ellipse. EFFECT: higher efficiency. 2 cl, 3 dwg
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METHOD FOR IMPROVING AIR-AND-WATER CONDITION OF SOIL FOR PERENNIAL FODDER CROP SEED, APPARATUS FOR CUTTING SLITS-MOLES AND LAYING DRAIN PIPES AND DRYING AND SUBSOIL WETTING APPARATUS | 1997 |
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Authors
Dates
1995-01-09—Published
1991-06-04—Filed