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CA810100A - Pencil leads and method for preparing thereof - Google Patents

Pencil leads and method for preparing thereof

Info

Publication number
CA810100A
CA810100A CA810100A CA810100DA CA810100A CA 810100 A CA810100 A CA 810100A CA 810100 A CA810100 A CA 810100A CA 810100D A CA810100D A CA 810100DA CA 810100 A CA810100 A CA 810100A
Authority
CA
Canada
Prior art keywords
preparing
pencil leads
pencil
leads
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
CA810100A
Inventor
Tsukahara Osamu
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.)
Dai Nihon Bungu Co Ltd
Original Assignee
Dai Nihon Bungu Co Ltd
Publication date
Application granted granted Critical
Publication of CA810100A publication Critical patent/CA810100A/en
Expired legal-status Critical Current

Links

CA810100A Pencil leads and method for preparing thereof Expired CA810100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA810100T

Publications (1)

Publication Number Publication Date
CA810100A true CA810100A (en) 1969-04-08

Family

ID=36280617

Family Applications (1)

Application Number Title Priority Date Filing Date
CA810100A Expired CA810100A (en) Pencil leads and method for preparing thereof

Country Status (1)

Country Link
CA (1) CA810100A (en)

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