BE525753A - - Google Patents

Info

Publication number: BE525753A
Authority: BE; Belgium

Application number

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.)

1953-01-17

Publication of BE525753A publication Critical patent/BE525753A/xx

Classifications

- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type

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)
Conveying And Assembling Of Building Elements In Situ (AREA)

BE525753D 1953-01-17 BE525753A (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE750706X		1953-01-17

Publications (1)

Publication Number	Publication Date
BE525753A true BE525753A (cg-RX-API-DMAC7.html)

Family

ID=6650691

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE525753D BE525753A (cg-RX-API-DMAC7.html)	1953-01-17

Country Status (4)

Country	Link
BE (1)	BE525753A (cg-RX-API-DMAC7.html)
FR (1)	FR1091452A (cg-RX-API-DMAC7.html)
GB (1)	GB750706A (cg-RX-API-DMAC7.html)
NL (1)	NL87036C (cg-RX-API-DMAC7.html)

0
- NL NL87036D patent/NL87036C/xx active
- BE BE525753D patent/BE525753A/xx unknown
1954
- 1954-01-15 GB GB1249/54A patent/GB750706A/en not_active Expired
- 1954-01-15 FR FR1091452D patent/FR1091452A/fr not_active Expired

Also Published As

Publication number	Publication date
NL87036C (cg-RX-API-DMAC7.html)
GB750706A (en)	1956-06-20
FR1091452A (fr)	1955-04-12

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