JPS5270619A - Lead incapable of erasing - Google Patents
Lead incapable of erasingInfo
- 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
Links
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
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)
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 |
-
1975
- 1975-12-09 JP JP14650475A patent/JPS5270619A/en active Granted
Cited By (5)
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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