FR2103020A5 - - Google Patents

Info

Publication number
FR2103020A5
FR2103020A5 FR7126164A FR7126164A FR2103020A5 FR 2103020 A5 FR2103020 A5 FR 2103020A5 FR 7126164 A FR7126164 A FR 7126164A FR 7126164 A FR7126164 A FR 7126164A FR 2103020 A5 FR2103020 A5 FR 2103020A5
Authority
FR
France
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
FR7126164A
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.)
VEDECKO VYZKUMNY UHELNY
Original Assignee
VEDECKO VYZKUMNY UHELNY
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 VEDECKO VYZKUMNY UHELNY filed Critical VEDECKO VYZKUMNY UHELNY
Application granted granted Critical
Publication of FR2103020A5 publication Critical patent/FR2103020A5/fr
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
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
FR7126164A 1970-07-23 1971-07-16 Expired FR2103020A5 (Direct)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS517970 1970-07-23

Publications (1)

Publication Number Publication Date
FR2103020A5 true FR2103020A5 (Direct) 1972-04-07

Family

ID=5396177

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7126164A Expired FR2103020A5 (Direct) 1970-07-23 1971-07-16

Country Status (3)

Country Link
CA (1) CA943228A (Direct)
FR (1) FR2103020A5 (Direct)
ZA (1) ZA714098B (Direct)

Also Published As

Publication number Publication date
ZA714098B (en) 1972-03-29
CA943228A (en) 1974-03-05

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Legal Events

Date Code Title Description
ST Notification of lapse