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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0884174 (1978-03-07) |
우선권정보 | AU-0009331 (1977-03-08); AU-0001131 (1977-08-08) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 12 인용 특허 : 1 |
Games practice device having two upright spaced poles and an elastic line formed in three sections extending from a common junction. Ends of two sections are formed into loops engaged around cylindrical surfaces of end connectors which provide couplings to the upper ends of the poles. A ball is susp
A ball game practice device comprising a ball, a line having first, second and third sections extending from a common junction to respective outer ends thereof, at least said first and second sections being formed of elastic material, two elongate members positionable to extend from a ground surface
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