FR631939A - Mechanical pencil - Google Patents

Mechanical pencil

Info

Publication number
FR631939A
FR631939A FR631939DA FR631939A FR 631939 A FR631939 A FR 631939A FR 631939D A FR631939D A FR 631939DA FR 631939 A FR631939 A FR 631939A
Authority
FR
France
Prior art keywords
mechanical pencil
pencil
mechanical
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
Paul Kohler
Christian Schaefer
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 filed Critical
Application granted granted Critical
Publication of FR631939A publication Critical patent/FR631939A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/08—Writing-core feeding mechanisms with the writing-cores fed by screws
    • B43K21/14—Writing-core feeding mechanisms with the writing-cores fed by screws with writing-cores automatically replaced from magazines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B3/00—Ploughs with fixed plough-shares
    • A01B3/24—Tractor-drawn ploughs
    • A01B3/28—Alternating ploughs
    • A01B3/30—Turn-wrest ploughs

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
FR631939D 1927-04-01 1927-04-01 Mechanical pencil Expired FR631939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR631939T 1927-04-01

Publications (1)

Publication Number Publication Date
FR631939A true FR631939A (en) 1927-12-29

Family

ID=8992163

Family Applications (1)

Application Number Title Priority Date Filing Date
FR631939D Expired FR631939A (en) 1927-04-01 1927-04-01 Mechanical pencil

Country Status (2)

Country Link
BE (1) BE341050A (en)
FR (1) FR631939A (en)

Also Published As

Publication number Publication date
BE341050A (en)

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