FR655624A - Alarm device to prevent gas poisoning - Google Patents

Alarm device to prevent gas poisoning

Info

Publication number
FR655624A
FR655624A FR655624DA FR655624A FR 655624 A FR655624 A FR 655624A FR 655624D A FR655624D A FR 655624DA FR 655624 A FR655624 A FR 655624A
Authority
FR
France
Prior art keywords
alarm device
prevent gas
gas poisoning
poisoning
prevent
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
Anders Hilmer Olsson
Per Daniel Peterson
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 FR655624A publication Critical patent/FR655624A/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

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)
FR655624D 1927-06-11 1928-06-11 Alarm device to prevent gas poisoning Expired FR655624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE655624X 1927-06-11

Publications (1)

Publication Number Publication Date
FR655624A true FR655624A (en) 1929-04-22

Family

ID=20314165

Family Applications (1)

Application Number Title Priority Date Filing Date
FR655624D Expired FR655624A (en) 1927-06-11 1928-06-11 Alarm device to prevent gas poisoning

Country Status (1)

Country Link
FR (1) FR655624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530155A (en) * 1949-11-25 1950-11-14 Luca Albert De Tone amplifier for musical instruments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530155A (en) * 1949-11-25 1950-11-14 Luca Albert De Tone amplifier for musical instruments

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