최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0986587 (1992-12-07) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 24 인용 특허 : 0 |
A new and improved tethered-ball, hitting practice apparatus is disclosed that includes a base member, a vertical support member connected to and supported by the base member, a tether-assembly-retaining member connected to and supported by the vertical support member, and a tether assembly connecte
A new and improved tethered-ball, hitting practice apparatus supported on a horizontal surface, comprising: a base member supported by the horizontal surface; a vertical support member connected to and supported by said base member, said vertical support including means for adjusting the vertical le
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