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FR675520A - Improvements in ventilating devices - Google Patents

Improvements in ventilating devices

Info

Publication number
FR675520A
FR675520A FR675520DA FR675520A FR 675520 A FR675520 A FR 675520A FR 675520D A FR675520D A FR 675520DA FR 675520 A FR675520 A FR 675520A
Authority
FR
France
Prior art keywords
ventilating devices
ventilating
devices
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
Alexander William Stewart
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 FR675520A publication Critical patent/FR675520A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR675520D 1928-05-29 1929-05-22 Improvements in ventilating devices Expired FR675520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB675520X 1928-05-29

Publications (1)

Publication Number Publication Date
FR675520A true FR675520A (en) 1930-02-11

Family

ID=10492046

Family Applications (1)

Application Number Title Priority Date Filing Date
FR675520D Expired FR675520A (en) 1928-05-29 1929-05-22 Improvements in ventilating devices

Country Status (1)

Country Link
FR (1) FR675520A (en)

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