BE426913A - - Google Patents

Info

Publication number
BE426913A
BE426913A BE426913DA BE426913A BE 426913 A BE426913 A BE 426913A BE 426913D A BE426913D A BE 426913DA BE 426913 A BE426913 A BE 426913A
Authority
BE
Belgium
Prior art keywords
cap
ring
frustoconical
level
casing
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE426913A publication Critical patent/BE426913A/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/02Roof ventilation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
BE426913D BE426913A (cs)

Publications (1)

Publication Number Publication Date
BE426913A true BE426913A (cs)

Family

ID=87599

Family Applications (1)

Application Number Title Priority Date Filing Date
BE426913D BE426913A (cs)

Country Status (1)

Country Link
BE (1) BE426913A (cs)

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