FR429862A - Device indicating the presence in the air of toxic or flammable gases - Google Patents

Device indicating the presence in the air of toxic or flammable gases

Info

Publication number
FR429862A
FR429862A FR429862DA FR429862A FR 429862 A FR429862 A FR 429862A FR 429862D A FR429862D A FR 429862DA FR 429862 A FR429862 A FR 429862A
Authority
FR
France
Prior art keywords
toxic
air
device indicating
flammable gases
flammable
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
French (fr)
Inventor
Andre Guasco
Georges Megret
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEORGES MEGRET
Original Assignee
GEORGES MEGRET
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 by GEORGES MEGRET filed Critical GEORGES MEGRET
Application granted granted Critical
Publication of FR429862A publication Critical patent/FR429862A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
    • G01N25/44—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the heat developed being transferred to a fixed quantity of fluid
    • G01N25/46—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the heat developed being transferred to a fixed quantity of fluid for investigating the composition of gas mixtures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
FR429862D 1911-04-28 1911-04-28 Device indicating the presence in the air of toxic or flammable gases Expired FR429862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR429862T 1911-04-28

Publications (1)

Publication Number Publication Date
FR429862A true FR429862A (en) 1911-10-03

Family

ID=1472158

Family Applications (1)

Application Number Title Priority Date Filing Date
FR429862D Expired FR429862A (en) 1911-04-28 1911-04-28 Device indicating the presence in the air of toxic or flammable gases

Country Status (1)

Country Link
FR (1) FR429862A (en)

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