DE266455C - - Google Patents

Info

Publication number
DE266455C
DE266455C DENDAT266455D DE266455DA DE266455C DE 266455 C DE266455 C DE 266455C DE NDAT266455 D DENDAT266455 D DE NDAT266455D DE 266455D A DE266455D A DE 266455DA DE 266455 C DE266455 C DE 266455C
Authority
DE
Germany
Prior art keywords
refrigerant
column
layer
liquid
coolant
Prior art date
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.)
Active
Application number
DENDAT266455D
Other languages
German (de)
English (en)
Publication of DE266455C publication Critical patent/DE266455C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/10—Preparation of the ground
    • E21D1/12—Preparation of the ground by freezing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
DENDAT266455D Active DE266455C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE266455C true DE266455C (enrdf_load_stackoverflow)

Family

ID=523590

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT266455D Active DE266455C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE266455C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121008A (en) * 1990-11-29 1992-06-09 Talmadge Paul C Circuit for generating or demodulating a square wave and other wave forms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121008A (en) * 1990-11-29 1992-06-09 Talmadge Paul C Circuit for generating or demodulating a square wave and other wave forms

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