Title:
【考案の名称】ノック式筆記具
Document Type and Number:
Japanese Patent JP2528321
Kind Code:
Y2
Inventors:
Masafumi Hamada
Application Number:
JP1668891U
Publication Date:
March 12, 1997
Filing Date:
January 21, 1991
Export Citation:
Assignee:
MITSUBISHI PENCIL CO.,LTD.
International Classes:
B43K21/16; B43K21/22; (IPC1-7): B43K21/16; B43K21/22
Domestic Patent References:
| JP5298539U | ||||
| JP54119435U |
Attorney, Agent or Firm:
Taizo Sugiyama