4. Planting
  5. Drilling and broadcasting
  6. Main and auxiliary frame machines

Clement O. DuFrene

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Control valve apparatus and steering systems

Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent

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Rotary fluid device with axially sliding vanes

Rotary expansible chamber devices – Plural working chambers – Axially spaced working chambers
Patent

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Rotary fluid devices

Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent

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Transplanters

Planting – Drilling and broadcasting – Main and auxiliary frame machines
Patent

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Profile ID: LFUS-PAI-P-1454929

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