CA204752A - Procede et appareil a fabrication de mine de plomb a crayons - Google Patents

Procede et appareil a fabrication de mine de plomb a crayons

Info

Publication number
CA204752A
CA204752A CA204752A CA204752DA CA204752A CA 204752 A CA204752 A CA 204752A CA 204752 A CA204752 A CA 204752A CA 204752D A CA204752D A CA 204752DA CA 204752 A CA204752 A CA 204752A
Authority
CA
Canada
Prior art keywords
pencil leads
making pencil
making
leads
pencil
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
CA204752A
Other languages
English (en)
Inventor
Burt William
Barker Howard
Benjamin Goldsmith Byron
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.)
AMERICAN LEAD PENCIL Co
Original Assignee
AMERICAN LEAD PENCIL Co
Publication date
Application granted granted Critical
Publication of CA204752A publication Critical patent/CA204752A/fr
Expired legal-status Critical Current

Links

CA204752A Procede et appareil a fabrication de mine de plomb a crayons Expired CA204752A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA204752T

Publications (1)

Publication Number Publication Date
CA204752A true CA204752A (fr) 1920-10-12

Family

ID=35098531

Family Applications (1)

Application Number Title Priority Date Filing Date
CA204752A Expired CA204752A (fr) Procede et appareil a fabrication de mine de plomb a crayons

Country Status (1)

Country Link
CA (1) CA204752A (fr)

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