with tools or tool-frames moved to-and-fro mechanically

Full Title

Harrows with non-rotating tools > with tools rigidly or elastically attached to a tool-frame > with tools or tool-frames moved to-and-fro mechanically

Classification Context

Section:

HUMAN NECESSITIES

Class:

AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING

Subclass:

SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL