KR840005810U - 암산 연습기 - Google Patents

암산 연습기

Info

Publication number
KR840005810U
KR840005810U KR2019830002541U KR830002541U KR840005810U KR 840005810 U KR840005810 U KR 840005810U KR 2019830002541 U KR2019830002541 U KR 2019830002541U KR 830002541 U KR830002541 U KR 830002541U KR 840005810 U KR840005810 U KR 840005810U
Authority
KR
South Korea
Prior art keywords
exerciser
mental arithmetic
mental
arithmetic
arithmetic exerciser
Prior art date
Application number
KR2019830002541U
Other languages
English (en)
Other versions
KR840002125Y1 (ko
Inventor
정금포
Original Assignee
정금포
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 정금포 filed Critical 정금포
Priority to KR2019830002541U priority Critical patent/KR840002125Y1/ko
Application granted granted Critical
Publication of KR840002125Y1 publication Critical patent/KR840002125Y1/ko
Publication of KR840005810U publication Critical patent/KR840005810U/ko

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B1/00—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
    • G09B1/02—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements
    • G09B1/16—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time
    • G09B1/18—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time the elements being rotatable
    • G09B1/20—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time the elements being rotatable and bearing the symbols on a surface parallel to the axis of rotation

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Toys (AREA)
KR2019830002541U 1983-03-23 1983-03-23 암산 연습기 KR840002125Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019830002541U KR840002125Y1 (ko) 1983-03-23 1983-03-23 암산 연습기

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019830002541U KR840002125Y1 (ko) 1983-03-23 1983-03-23 암산 연습기

Publications (2)

Publication Number Publication Date
KR840002125Y1 KR840002125Y1 (ko) 1984-10-13
KR840005810U true KR840005810U (ko) 1984-11-10

Family

ID=70158004

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019830002541U KR840002125Y1 (ko) 1983-03-23 1983-03-23 암산 연습기

Country Status (1)

Country Link
KR (1) KR840002125Y1 (ko)

Also Published As

Publication number Publication date
KR840002125Y1 (ko) 1984-10-13

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19870803

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee