FR2253911B1 - - Google Patents

Info

Publication number
FR2253911B1
FR2253911B1 FR7440059A FR7440059A FR2253911B1 FR 2253911 B1 FR2253911 B1 FR 2253911B1 FR 7440059 A FR7440059 A FR 7440059A FR 7440059 A FR7440059 A FR 7440059A FR 2253911 B1 FR2253911 B1 FR 2253911B1
Authority
FR
France
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
FR7440059A
Other versions
FR2253911A1 (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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Publication of FR2253911A1 publication Critical patent/FR2253911A1/fr
Application granted granted Critical
Publication of FR2253911B1 publication Critical patent/FR2253911B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
    • G01N23/203—Measuring back scattering

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
FR7440059A 1973-12-07 1974-12-06 Expired FR2253911B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5674673A GB1443227A (en) 1973-12-07 1973-12-07 Steering of mining machines

Publications (2)

Publication Number Publication Date
FR2253911A1 FR2253911A1 (fr) 1975-07-04
FR2253911B1 true FR2253911B1 (fr) 1979-01-05

Family

ID=10477433

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7440059A Expired FR2253911B1 (fr) 1973-12-07 1974-12-06

Country Status (3)

Country Link
DE (1) DE2456203A1 (fr)
FR (1) FR2253911B1 (fr)
GB (1) GB1443227A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1526028A (en) * 1976-04-30 1978-09-27 Coal Ind Method of and apparatus for steering a cutting means of a mineral mining machine
GB2039093B (en) * 1978-12-26 1982-11-24 Conoco Inc Drill machine guidance using natural occuring radiation
GB2068436B (en) * 1980-02-01 1983-08-10 Coal Industry Patents Ltd Mining machine steering equipment
GB2144466B (en) * 1983-08-02 1986-06-25 Coal Ind Steering of mining machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267638B (de) * 1964-10-26 1968-05-09 Dowty Electrics Ltd Fernsteuereinrichtung fuer eine Bohr- oder Walzenschraemmaschine

Also Published As

Publication number Publication date
DE2456203A1 (de) 1975-06-12
GB1443227A (en) 1976-07-21
FR2253911A1 (fr) 1975-07-04

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Legal Events

Date Code Title Description
ST Notification of lapse