4. Earth working
  5. With indicating or sighting means

Sam J. Brown

Inventor

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Centerline sight

Earth working – With indicating or sighting means
Patent

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Centerline sight with reverse pendulum

Earth working – With indicating or sighting means
Patent

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Furrow follower vision correction system

Earth working – With indicating or sighting means
Patent

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Variable centerline sight

Geometrical instruments – Straight-line light ray type – Structurally installed
Patent

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Profile ID: LFUS-PAI-P-72968

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