Classifications

• • 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
  • A01B3/16—Alternating ploughs, i.e. capable of making an adjacent furrow on return journey
  • A01B3/18—Turn-wrest ploughs
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
  • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
  • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
  • G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Soil Sciences (AREA)
• Mechanical Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Plasma & Fusion (AREA)
• Zoology (AREA)
• Analytical Chemistry (AREA)
• Biochemistry (AREA)
• Environmental Sciences (AREA)
• General Physics & Mathematics (AREA)
• Immunology (AREA)
• Pathology (AREA)
• Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
• Agricultural Machines (AREA)
• Automatic Analysis And Handling Materials Therefor (AREA)
• Investigating Or Analysing Biological Materials (AREA)
• Spectrometry And Color Measurement (AREA)
• Sampling And Sample Adjustment (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=32479188

Family Applications (10)

Family Applications Before (1)

Family Applications After (8)

Country Status (3)

Families Citing this family (2)

• 0
  • DE DENDAT232200D patent/DE232200C/de active Active
  • DE DENDAT233225D patent/DE233225C/de active Active
  • DE DENDAT241076D patent/DE241076C/de active Active
  • DE DENDAT231117D patent/DE231117C/de active Active
  • DE DENDAT231118D patent/DE231118C/de active Active
  • GB GBK18502D patent/GB191018502A/en active Active
  • DE DENDAT241073D patent/DE241073C/de active Active
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  • DE DENDAT247165D patent/DE247165C/de active Active
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• 1910
  • 1910-11-23 GB GB191027254D patent/GB191027254A/en not_active Expired
  • 1910-11-23 FR FR422883A patent/FR422883A/fr not_active Expired
  • 1910-11-23 GB GB191027253D patent/GB191027253A/en not_active Expired

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