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Disk grading terrace plow

Earth working – Rolling – rotating or orbitally moving tool – Plural disks with individual mount or axis
Patent

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Disk harrow assembly

Earth working – Rolling – rotating or orbitally moving tool – With spring means other than for detent
Patent

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Disk harrow standard for support beams of different cross sectio

Earth working – Rolling – rotating or orbitally moving tool – Disk gang
Patent

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Disk harrow with beam member suspended by U-shaped springs

Earth working – Rolling – rotating or orbitally moving tool – With spring means other than for detent
Patent

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Disk harrow with cushion gang

Earth working – Rolling – rotating or orbitally moving tool – With spring means other than for detent
Patent

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Disk harrow with individually spring-mounted disks

Earth working – Rolling – rotating or orbitally moving tool – With spring means other than for detent
Patent

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Disk harrow with U-shaped cushions of tapered round section

Earth working – Rolling – rotating or orbitally moving tool – Disk gang
Reexamination Certificate

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Double-coated sintered hard-faced harrow disk blades

Earth working – Rolling – rotating or orbitally moving tool – Detailed disk structure per se
Reexamination Certificate

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Dual coulter device

Earth working – Rolling – rotating or orbitally moving tool – Disks pivoted on vertical axes with interconnected means for...
Patent

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Dual frame offset disc implement with tongue members and a tow b

Earth working – Rolling – rotating or orbitally moving tool – Plural groups of disks
Patent

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