Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
  • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
  • E21D15/14—Telescopic props
  • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

Landscapes

• Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Geology (AREA)
• Sealing Devices (AREA)
• Pressure Vessels And Lids Thereof (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6974920

Family Applications (1)

Country Status (3)

• 0
  • NL NL277527D patent/NL277527A/xx unknown
  • BE BE627892D patent/BE627892A/xx unknown
• 1963
  • 1963-02-01 GB GB420663A patent/GB1025772A/en not_active Expired

Also Published As

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