FR535314A - Improvements in ventilators - Google Patents

Improvements in ventilators

Info

Publication number
FR535314A
FR535314A FR535314DA FR535314A FR 535314 A FR535314 A FR 535314A FR 535314D A FR535314D A FR 535314DA FR 535314 A FR535314 A FR 535314A
Authority
FR
France
Prior art keywords
ventilators
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
Adolph Fredrick Roth
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 FR535314A publication Critical patent/FR535314A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation
    • F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR535314D 1921-05-10 1921-05-10 Improvements in ventilators Expired FR535314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR535314T 1921-05-10

Publications (1)

Publication Number Publication Date
FR535314A true FR535314A (en) 1922-04-13

Family

ID=8926089

Family Applications (1)

Application Number Title Priority Date Filing Date
FR535314D Expired FR535314A (en) 1921-05-10 1921-05-10 Improvements in ventilators

Country Status (1)

Country Link
FR (1) FR535314A (en)

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