Title:
【考案の名称】複式筆記具
Document Type and Number:
Japanese Patent JPH04102889
Kind Code:
U
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Inventors:
Sakae Hayao
Application Number:
JP1366891U
Publication Date:
September 04, 1992
Filing Date:
February 18, 1991
Export Citation:
International Classes:
B43K27/08; B43K27/12; (IPC1-7): B43K27/08
Domestic Patent References:
| JPS52113767A | 1977-09-24 |
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