JPH0650025Y2 - 暗算練習用そろばん - Google Patents

暗算練習用そろばん

Info

Publication number
JPH0650025Y2
JPH0650025Y2 JP1988018520U JP1852088U JPH0650025Y2 JP H0650025 Y2 JPH0650025 Y2 JP H0650025Y2 JP 1988018520 U JP1988018520 U JP 1988018520U JP 1852088 U JP1852088 U JP 1852088U JP H0650025 Y2 JPH0650025 Y2 JP H0650025Y2
Authority
JP
Japan
Prior art keywords
beads
abacus
digit
mental arithmetic
practice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP1988018520U
Other languages
English (en)
Japanese (ja)
Other versions
JPH01123223U (enrdf_load_stackoverflow
Inventor
久子 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP1988018520U priority Critical patent/JPH0650025Y2/ja
Publication of JPH01123223U publication Critical patent/JPH01123223U/ja
Application granted granted Critical
Publication of JPH0650025Y2 publication Critical patent/JPH0650025Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sheet Holders (AREA)
  • Toys (AREA)
  • Electrically Operated Instructional Devices (AREA)
JP1988018520U 1988-02-15 1988-02-15 暗算練習用そろばん Expired - Lifetime JPH0650025Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988018520U JPH0650025Y2 (ja) 1988-02-15 1988-02-15 暗算練習用そろばん

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988018520U JPH0650025Y2 (ja) 1988-02-15 1988-02-15 暗算練習用そろばん

Publications (2)

Publication Number Publication Date
JPH01123223U JPH01123223U (enrdf_load_stackoverflow) 1989-08-22
JPH0650025Y2 true JPH0650025Y2 (ja) 1994-12-14

Family

ID=31233244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988018520U Expired - Lifetime JPH0650025Y2 (ja) 1988-02-15 1988-02-15 暗算練習用そろばん

Country Status (1)

Country Link
JP (1) JPH0650025Y2 (enrdf_load_stackoverflow)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869092U (enrdf_load_stackoverflow) * 1971-12-04 1973-09-01
JPS4865998A (enrdf_load_stackoverflow) * 1971-12-10 1973-09-10
JPS5871833U (ja) * 1981-11-06 1983-05-16 金井　健 教育用九珠算盤
CN85201327U (zh) * 1985-04-01 1986-07-02 靳利民 多功能固定档小珠算盘

Also Published As

Publication number Publication date
JPH01123223U (enrdf_load_stackoverflow) 1989-08-22

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