US73231A - Improvement in shovel-ploughs - Google Patents

Improvement in shovel-ploughs Download PDF

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Publication number
US73231A
US73231A US73231DA US73231A US 73231 A US73231 A US 73231A US 73231D A US73231D A US 73231DA US 73231 A US73231 A US 73231A
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US
United States
Prior art keywords
ploughs
shovel
improvement
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Expired - Lifetime
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Publication of US73231A publication Critical patent/US73231A/en
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Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B3/00—Ploughs with fixed plough-shares
    • A01B3/04—Animal-drawn ploughs
    • A01B3/06—Animal-drawn ploughs without alternating possibility, i.e. incapable of making an adjacent furrow on return journey, i.e. conventional ploughing
    • A01B3/08—Swing ploughs

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  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Steroid Compounds (AREA)

Description

US73231D Improvement in shovel-ploughs Expired - Lifetime US73231A (en)

Publications (1)

Publication Number Publication Date
US73231A true US73231A (en) 1868-01-14

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ID=2142741

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US73231D Expired - Lifetime US73231A (en) Improvement in shovel-ploughs

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US (1) US73231A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040236343A1 (en) * 2003-05-23 2004-11-25 Taylor Jon B. Insertion tool for ocular implant and method for using same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040236343A1 (en) * 2003-05-23 2004-11-25 Taylor Jon B. Insertion tool for ocular implant and method for using same

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