CH257431A - Mechanical pencil with lead back. - Google Patents

Mechanical pencil with lead back.

Info

Publication number
CH257431A
CH257431A CH257431DA CH257431A CH 257431 A CH257431 A CH 257431A CH 257431D A CH257431D A CH 257431DA CH 257431 A CH257431 A CH 257431A
Authority
CH
Switzerland
Prior art keywords
mechanical pencil
lead back
lead
pencil
mechanical
Prior art date
Application number
Other languages
German (de)
Inventor
Koh-I-Noor Nationalunternehmen
Original Assignee
Koh I Noor Bleistiftfabrik L &
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 Koh I Noor Bleistiftfabrik L & filed Critical Koh I Noor Bleistiftfabrik L &
Publication of CH257431A publication Critical patent/CH257431A/en

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
    • B43K21/16—Writing-core feeding mechanisms with stepwise feed of writing-cores
    • B43K21/20—Writing-core feeding mechanisms with stepwise feed of writing-cores with writing-cores automatically replaced from magazines
CH257431D 1947-07-07 1947-08-14 Mechanical pencil with lead back. CH257431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS257431X 1947-07-07

Publications (1)

Publication Number Publication Date
CH257431A true CH257431A (en) 1948-10-15

Family

ID=5451485

Family Applications (1)

Application Number Title Priority Date Filing Date
CH257431D CH257431A (en) 1947-07-07 1947-08-14 Mechanical pencil with lead back.

Country Status (4)

Country Link
BE (1) BE475862A (en)
CH (1) CH257431A (en)
GB (1) GB638116A (en)
NL (1) NL69655C (en)

Also Published As

Publication number Publication date
NL69655C (en)
BE475862A (en)
GB638116A (en) 1950-05-31

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