Patent classifications
A
HUMAN NECESSITIES
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A01
AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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A01B
SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
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69/00
Steering of agricultural machines or implements; Guiding agricultural machines or implements on a desired track
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A01B69/02
Ridge-marking or like devices; Checkrow wires; Accessories therefor
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A01B69/024
adapted to cut and form a ridge or forrow in the soil surface, e.g. with a disc
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