FR1139891A - Terrestrial layer indicator device - Google Patents

Terrestrial layer indicator device

Info

Publication number
FR1139891A
FR1139891A FR1139891DA FR1139891A FR 1139891 A FR1139891 A FR 1139891A FR 1139891D A FR1139891D A FR 1139891DA FR 1139891 A FR1139891 A FR 1139891A
Authority
FR
France
Prior art keywords
indicator device
layer indicator
terrestrial layer
terrestrial
layer
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.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Corp
Original Assignee
Union Carbide and Carbon Corp
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.)
Filing date
Publication date
Application filed by Union Carbide and Carbon Corp filed Critical Union Carbide and Carbon Corp
Application granted granted Critical
Publication of FR1139891A publication Critical patent/FR1139891A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C39/00—Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools

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)
FR1139891D 1954-11-18 1955-11-15 Terrestrial layer indicator device Expired FR1139891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1139891XA 1954-11-18 1954-11-18

Publications (1)

Publication Number Publication Date
FR1139891A true FR1139891A (en) 1957-07-08

Family

ID=22352721

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1139891D Expired FR1139891A (en) 1954-11-18 1955-11-15 Terrestrial layer indicator device

Country Status (1)

Country Link
FR (1) FR1139891A (en)

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