BE523142A - - Google Patents

Info

Publication number: BE523142A
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.)

1953-03-14

Publication of BE523142A publication Critical patent/BE523142A/xx

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

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)
Emergency Alarm Devices (AREA)

BE523142D 1953-03-14 BE523142A (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB710853A GB759852A (en)	1953-03-14	1953-03-14	Improvements in or relating to electrically operated signalling systems

Publications (1)

Publication Number	Publication Date
BE523142A true BE523142A (cg-RX-API-DMAC7.html)

Family

ID=9826756

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE523142D BE523142A (cg-RX-API-DMAC7.html)	1953-03-14

Country Status (3)

Country	Link
BE (1)	BE523142A (cg-RX-API-DMAC7.html)
FR (1)	FR1085295A (cg-RX-API-DMAC7.html)
GB (1)	GB759852A (cg-RX-API-DMAC7.html)

0
- BE BE523142D patent/BE523142A/xx unknown
1953
- 1953-03-14 GB GB710853A patent/GB759852A/en not_active Expired
- 1953-10-20 FR FR1085295D patent/FR1085295A/fr not_active Expired

Also Published As

Publication number	Publication date
FR1085295A (fr)	1955-01-31
GB759852A (en)	1956-10-24

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