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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A01B69/007
Steering or guiding of agricultural vehicles, e.g. steering of the tractor to keep the plough in the furrow
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