JPS5423615B2 - - Google Patents
Info
- Publication number
- JPS5423615B2 JPS5423615B2 JP14650475A JP14650475A JPS5423615B2 JP S5423615 B2 JPS5423615 B2 JP S5423615B2 JP 14650475 A JP14650475 A JP 14650475A JP 14650475 A JP14650475 A JP 14650475A JP S5423615 B2 JPS5423615 B2 JP S5423615B2
- Authority
- JP
- Japan
- 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
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 JPS5270619A (en) | 1977-06-13 |
| JPS5423615B2 true JPS5423615B2 (en:Method) | 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:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5887166A (ja) * | 1981-11-18 | 1983-05-24 | Pilot Precision Co Ltd | 鉛芯の製造法 |
| JPS58113274A (ja) * | 1981-12-26 | 1983-07-06 | Pilot Precision Co Ltd | 鉛芯の製造法 |
| JPH0959556A (ja) * | 1995-08-29 | 1997-03-04 | Mitsubishi Pencil Co Ltd | 非消去性鉛筆芯 |
-
1975
- 1975-12-09 JP JP14650475A patent/JPS5270619A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5270619A (en) | 1977-06-13 |