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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0130197 (1987-12-08) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 4 |
An educational toy for teaching children the alphabet has a circular or oval base with a plurality of upstanding support rods. Four horizontal mounting rods are supported by the upstanding support rods. The ends of the horizontal mounting rods are each provided with a safety ball tip. A canvas pouch
A new and improved educational toy, comprising: an oval tubular base ring; four tubular upstanding support rods circumferentially spaced around said base ring; each of said support rods having one end connected to said base ring and an opposite end curved inwardly toward a center of said base ring;
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