NL28246C - - Google Patents

Info

Publication number
NL28246C
NL28246C NL28246DA NL28246C NL 28246 C NL28246 C NL 28246C NL 28246D A NL28246D A NL 28246DA NL 28246 C NL28246 C NL 28246C
Authority
NL
Netherlands
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.)
Publication of NL28246C publication Critical patent/NL28246C/xx

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

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)
NL28246D 1927-11-23 NL28246C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE663918X 1927-11-23

Publications (1)

Publication Number Publication Date
NL28246C true NL28246C (enrdf_load_stackoverflow)

Family

ID=6589338

Family Applications (1)

Application Number Title Priority Date Filing Date
NL28246D NL28246C (enrdf_load_stackoverflow) 1927-11-23

Country Status (2)

Country Link
FR (1) FR663918A (enrdf_load_stackoverflow)
NL (1) NL28246C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR663918A (fr) 1929-08-27

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