FR927001A - Dispositif d'observation des fumées - Google Patents

Dispositif d'observation des fumées

Info

Publication number
FR927001A
FR927001A FR927001DA FR927001A FR 927001 A FR927001 A FR 927001A FR 927001D A FR927001D A FR 927001DA FR 927001 A FR927001 A FR 927001A
Authority
FR
France
Prior art keywords
observation device
smoke observation
smoke
observation
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
Robert Hudson Wager
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 FR927001A publication Critical patent/FR927001A/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
    • G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
FR927001D 1945-06-19 1946-05-16 Dispositif d'observation des fumées Expired FR927001A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US927001XA 1945-06-19 1945-06-19

Publications (1)

Publication Number Publication Date
FR927001A true FR927001A (fr) 1947-10-17

Family

ID=22234632

Family Applications (1)

Application Number Title Priority Date Filing Date
FR927001D Expired FR927001A (fr) 1945-06-19 1946-05-16 Dispositif d'observation des fumées

Country Status (1)

Country Link
FR (1) FR927001A (fr)

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