FR771904A - Colorimètre - Google Patents

Colorimètre

Info

Publication number
FR771904A
FR771904A FR771904DA FR771904A FR 771904 A FR771904 A FR 771904A FR 771904D A FR771904D A FR 771904DA FR 771904 A FR771904 A FR 771904A
Authority
FR
France
Prior art keywords
colorimeter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
English (en)
Inventor
Hermann Hirschmueller
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR771904A publication Critical patent/FR771904A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/251—Colorimeters; Construction thereof
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Analytical Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
FR771904D 1933-06-07 1934-04-16 Colorimètre Expired FR771904A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE416282X 1933-06-07

Publications (1)

Publication Number Publication Date
FR771904A true FR771904A (fr) 1934-10-17

Family

ID=6448570

Family Applications (1)

Application Number Title Priority Date Filing Date
FR771904D Expired FR771904A (fr) 1933-06-07 1934-04-16 Colorimètre

Country Status (2)

Country Link
FR (1) FR771904A (fr)
GB (1) GB416282A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461305A (en) * 1943-09-22 1949-02-08 Victor Products Ltd Rotary bit for drilling coal and rock

Also Published As

Publication number Publication date
GB416282A (en) 1934-09-13

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