FR903997A - Auxiliary device for iron formwork in mines - Google Patents

Auxiliary device for iron formwork in mines

Info

Publication number
FR903997A
FR903997A FR903997DA FR903997A FR 903997 A FR903997 A FR 903997A FR 903997D A FR903997D A FR 903997DA FR 903997 A FR903997 A FR 903997A
Authority
FR
France
Prior art keywords
mines
auxiliary device
iron formwork
formwork
iron
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)
Inventor
Dr Phil Werner Schulze
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.)
SCHWARTZ KG
Hermann Schwarz KG
Original Assignee
SCHWARTZ KG
Hermann Schwarz KG
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 SCHWARTZ KG, Hermann Schwarz KG filed Critical SCHWARTZ KG
Application granted granted Critical
Publication of FR903997A publication Critical patent/FR903997A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/08—Esters of oxyacids of phosphorus
    • C07F9/09—Esters of phosphoric acids
    • C07F9/10—Phosphatides, e.g. lecithin
    • C07F9/103—Extraction or purification by physical or chemical treatment of natural phosphatides; Preparation of compositions containing phosphatides of unknown structure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/10—Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
FR903997D 1935-05-29 1944-05-05 Auxiliary device for iron formwork in mines Expired FR903997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ22503D DE731996C (en) 1935-05-29 1935-05-29 Process for the preparation of mixed esters containing sulfuric acid and metaphosphoric acid of higher molecular weight unsaturated aliphatic alcohols

Publications (1)

Publication Number Publication Date
FR903997A true FR903997A (en) 1945-10-23

Family

ID=7625653

Family Applications (1)

Application Number Title Priority Date Filing Date
FR903997D Expired FR903997A (en) 1935-05-29 1944-05-05 Auxiliary device for iron formwork in mines

Country Status (3)

Country Link
BE (1) BE454810A (en)
DE (1) DE731996C (en)
FR (1) FR903997A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973959C (en) * 1952-03-22 1960-08-04 Zschimmer & Schwarz Process for the production of sulfonating agents for the gentle sulfonation of unsaturated fatty alcohols

Also Published As

Publication number Publication date
DE731996C (en) 1943-03-02
BE454810A (en) 1944-04-29

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