NL6405910A - - Google Patents

Info

Publication number
NL6405910A
NL6405910A NL6405910A NL6405910A NL6405910A NL 6405910 A NL6405910 A NL 6405910A NL 6405910 A NL6405910 A NL 6405910A NL 6405910 A NL6405910 A NL 6405910A NL 6405910 A NL6405910 A NL 6405910A
Authority
NL
Netherlands
Application number
NL6405910A
Other versions
NL143357B (en
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
Publication of NL6405910A publication Critical patent/NL6405910A/xx
Publication of NL143357B publication Critical patent/NL143357B/en

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)
NL6405910A 1963-06-14 1964-05-27 ACOUSTIC FILTER FOR A VENTILATION DUCT. NL143357B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE0024979 1963-06-14

Publications (2)

Publication Number Publication Date
NL6405910A true NL6405910A (en) 1964-12-15
NL143357B NL143357B (en) 1974-09-16

Family

ID=7071535

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6405910A NL143357B (en) 1963-06-14 1964-05-27 ACOUSTIC FILTER FOR A VENTILATION DUCT.

Country Status (4)

Country Link
BE (1) BE649280A (en)
CH (1) CH463064A (en)
DE (1) DE1454552B2 (en)
NL (1) NL143357B (en)

Also Published As

Publication number Publication date
DE1454552A1 (en) 1970-01-29
DE1454552B2 (en) 1972-02-24
NL143357B (en) 1974-09-16
BE649280A (en) 1964-10-01
CH463064A (en) 1968-09-30

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