FR609689A - Machine à confectionner des crayons d'ardoise - Google Patents

Machine à confectionner des crayons d'ardoise

Info

Publication number
FR609689A
FR609689A FR609689DA FR609689A FR 609689 A FR609689 A FR 609689A FR 609689D A FR609689D A FR 609689DA FR 609689 A FR609689 A FR 609689A
Authority
FR
France
Prior art keywords
making machine
slate pencil
pencil making
slate
machine
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
English (en)
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.)
CRAYONS D ARDOISE Sarl
Original Assignee
CRAYONS D ARDOISE Sarl
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 CRAYONS D ARDOISE Sarl filed Critical CRAYONS D ARDOISE Sarl
Application granted granted Critical
Publication of FR609689A publication Critical patent/FR609689A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
FR609689D 1925-04-22 1925-04-22 Machine à confectionner des crayons d'ardoise Expired FR609689A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR609689T 1925-04-22

Publications (1)

Publication Number Publication Date
FR609689A true FR609689A (fr) 1926-08-19

Family

ID=8976883

Family Applications (1)

Application Number Title Priority Date Filing Date
FR609689D Expired FR609689A (fr) 1925-04-22 1925-04-22 Machine à confectionner des crayons d'ardoise

Country Status (1)

Country Link
FR (1) FR609689A (fr)

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