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Class Information
Number: 172/524
Name: Earth working > Rolling, rotating or orbitally moving tool > Axis substantially vertical > With vertically extending teeth > Positioning means engaging circumference
Description: Apparatus in which a means engages the peripheral portion of the earth working element to control or to aid in controlling the position of the earth working element.

Patents under this class:

Patent Number Title Of Patent Date Issued
4140187 Harrow support Feb. 20, 1979
4063596 Soil cultivating machines Dec. 20, 1977

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