Title:
【発明の名称】回転黒板
Document Type and Number:
Japanese Patent JP3073947
Kind Code:
B2
Inventors:
Ryoko Sugii
Eiji Nogi
Eiji Nogi
Application Number:
JP28053897A
Publication Date:
August 07, 2000
Filing Date:
October 14, 1997
Export Citation:
Assignee:
Kokuyo Co., Ltd.
Aoi Blackboard Manufacturing Co., Ltd.
Aoi Blackboard Manufacturing Co., Ltd.
International Classes:
B43L1/04; (IPC1-7): B43L1/04
Domestic Patent References:
| JP75789U | ||||
| JP6174488U | ||||
| JP56592U | ||||
| JP57108995U | ||||
| JP60145088U | ||||
| JP4815158Y1 |
Attorney, Agent or Firm:
Kazuhiro Akazawa