Hirotake Izawa
Hirotake Izawa, Yokohama-Shi JP
Patent application number | Description | Published |
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20100166486 | MECHANICAL PENCIL - A chuck unit ( | 07-01-2010 |
20110002728 | MECHANICAL PENCIL - A chuck unit ( | 01-06-2011 |
20140016982 | MECHANICAL PENCIL - A mechanical pencil having a rotational drive mechanism which gradually rotates a writing lead on application of writing pressure and allowing rotational operation of the writing lead to be known reliably. First and second cam faces | 01-16-2014 |
20150023714 | MECHANICAL PENCIL - A mechanical pencil is provided which does not require operation of removing or re-fitting a cap but allows writing immediately after supplying a writing lead. A lead fixing chuck | 01-22-2015 |
20150050061 | MECHANICAL PENCIL | 02-19-2015 |
Hirotake Izawa, Kanagawa JP
Patent application number | Description | Published |
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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 |