Title:
【発明の名称】学習問題の作成及び学習成績の処理システム
Document Type and Number:
Japanese Patent JP2880326
Kind Code:
B2
Inventors:
MATSUO MASASATO
OBARA MASATAKA
OBARA MASATAKA
Application Number:
JP19251191A
Publication Date:
April 05, 1999
Filing Date:
July 06, 1991
Export Citation:
Assignee:
KIBI SHISUTEMU KK
International Classes:
G09B7/02; G09B19/00; (IPC1-7): G09B7/02
Domestic Patent References:
| JP1245284A | ||||
| JP59147378A |
Attorney, Agent or Firm:
Kozaburo Mori