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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0045575 (1987-05-04) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 10 인용 특허 : 0 |
A teaching device for pre-school aged children and method of using the same whereby each such child is provided with and thereafter repetitiously drilled with the hand-eye mechanics for tying a bow knot in a string or lace. Each device comprises an elongated body portion having first and second end
A teaching device for a pre-school and kindergarten aged child comprising a thin elongated body portion, said body having a first end segment, a second end segment and an intermediate segment integrally interposed between said first and said second end segment, said first and said second end segment
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