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FR1007985A - Ventilation switch - Google Patents

Ventilation switch

Info

Publication number
FR1007985A
FR1007985A FR1007985DA FR1007985A FR 1007985 A FR1007985 A FR 1007985A FR 1007985D A FR1007985D A FR 1007985DA FR 1007985 A FR1007985 A FR 1007985A
Authority
FR
France
Prior art keywords
ventilation switch
ventilation
switch
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MATEMINE
Original Assignee
MATEMINE
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 by MATEMINE filed Critical MATEMINE
Application granted granted Critical
Publication of FR1007985A publication Critical patent/FR1007985A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1007985D 1949-11-05 1949-11-05 Ventilation switch Expired FR1007985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1007985T 1949-11-05

Publications (1)

Publication Number Publication Date
FR1007985A true FR1007985A (en) 1952-05-12

Family

ID=9567037

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1007985D Expired FR1007985A (en) 1949-11-05 1949-11-05 Ventilation switch

Country Status (1)

Country Link
FR (1) FR1007985A (en)

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