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Hirotake Izawa
Hirotake Izawa, Yokohama-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100166486 | MECHANICAL PENCIL - A chuck unit ( | 07-01-2010 |
| 20110002728 | MECHANICAL PENCIL - A chuck unit ( | 01-06-2011 |
Hirotake Izawa, Kanagawa JP
| Patent application number | Description | Published |
|---|---|---|
| 20100232863 | MECHANICAL PENCIL | 09-16-2010 |
| 20100239351 | MECHANICAL PENCIL | 09-23-2010 |
| 20100254746 | MECHANICAL PENCIL | 10-07-2010 |
| 20100266325 | MECHANICAL PENCIL | 10-21-2010 |
| 20100322695 | MECHANICAL PENCIL - It is arranged that a writing lead ( | 12-23-2010 |