FR533964A - Apparatus for detecting the presence of lighting gas in apartments - Google Patents

Apparatus for detecting the presence of lighting gas in apartments

Info

Publication number
FR533964A
FR533964A FR533964DA FR533964A FR 533964 A FR533964 A FR 533964A FR 533964D A FR533964D A FR 533964DA FR 533964 A FR533964 A FR 533964A
Authority
FR
France
Prior art keywords
apartments
detecting
lighting gas
lighting
gas
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
Etienne Foray
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 FR533964A publication Critical patent/FR533964A/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
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/10—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials
    • G01N9/12—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials by observing the depth of immersion of the bodies, e.g. hydrometers
    • G01N9/18—Special adaptations for indicating, recording, or control

Landscapes

  • Physics & Mathematics (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)
FR533964D 1921-04-11 1921-04-11 Apparatus for detecting the presence of lighting gas in apartments Expired FR533964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR533964T 1921-04-11

Publications (1)

Publication Number Publication Date
FR533964A true FR533964A (en) 1922-03-15

Family

ID=8925226

Family Applications (1)

Application Number Title Priority Date Filing Date
FR533964D Expired FR533964A (en) 1921-04-11 1921-04-11 Apparatus for detecting the presence of lighting gas in apartments

Country Status (1)

Country Link
FR (1) FR533964A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901566A (en) * 1957-01-18 1959-08-25 Lucius K Clark Gas anticipator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901566A (en) * 1957-01-18 1959-08-25 Lucius K Clark Gas anticipator

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