JPS5270619A - Lead incapable of erasing - Google Patents

Lead incapable of erasing

Info

Publication number
JPS5270619A
JPS5270619A JP14650475A JP14650475A JPS5270619A JP S5270619 A JPS5270619 A JP S5270619A JP 14650475 A JP14650475 A JP 14650475A JP 14650475 A JP14650475 A JP 14650475A JP S5270619 A JPS5270619 A JP S5270619A
Authority
JP
Japan
Prior art keywords
incapable
erasing
lead
lead incapable
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.)
Granted
Application number
JP14650475A
Other languages
Japanese (ja)
Other versions
JPS5423615B2 (en
Inventor
Jiyouji Kubota
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.)
PAIROTSUTO PURESHIJIYON KK
Pilot Precision KK
Original Assignee
PAIROTSUTO PURESHIJIYON KK
Pilot Precision KK
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 PAIROTSUTO PURESHIJIYON KK, Pilot Precision KK filed Critical PAIROTSUTO PURESHIJIYON KK
Priority to JP14650475A priority Critical patent/JPS5270619A/en
Publication of JPS5270619A publication Critical patent/JPS5270619A/en
Publication of JPS5423615B2 publication Critical patent/JPS5423615B2/ja
Granted legal-status Critical Current

Links

JP14650475A 1975-12-09 1975-12-09 Lead incapable of erasing Granted JPS5270619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14650475A JPS5270619A (en) 1975-12-09 1975-12-09 Lead incapable of erasing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14650475A JPS5270619A (en) 1975-12-09 1975-12-09 Lead incapable of erasing

Publications (2)

Publication Number Publication Date
JPS5270619A true JPS5270619A (en) 1977-06-13
JPS5423615B2 JPS5423615B2 (en) 1979-08-15

Family

ID=15409113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14650475A Granted JPS5270619A (en) 1975-12-09 1975-12-09 Lead incapable of erasing

Country Status (1)

Country Link
JP (1) JPS5270619A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5887166A (en) * 1981-11-18 1983-05-24 Pilot Precision Co Ltd Preparation of pencil lead
JPS58113274A (en) * 1981-12-26 1983-07-06 Pilot Precision Co Ltd Production of pencil lead
US5716434A (en) * 1995-08-29 1998-02-10 Mitsubishi Pencil Kabushiki Kaisha Non-erasable pencil lead

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5887166A (en) * 1981-11-18 1983-05-24 Pilot Precision Co Ltd Preparation of pencil lead
JPH0252662B2 (en) * 1981-11-18 1990-11-14 Pilot Precision
JPS58113274A (en) * 1981-12-26 1983-07-06 Pilot Precision Co Ltd Production of pencil lead
JPH0252663B2 (en) * 1981-12-26 1990-11-14 Pilot Precision
US5716434A (en) * 1995-08-29 1998-02-10 Mitsubishi Pencil Kabushiki Kaisha Non-erasable pencil lead

Also Published As

Publication number Publication date
JPS5423615B2 (en) 1979-08-15

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