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 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0707850 (1996-09-09) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 14 인용 특허 : 13 |
A portable ball batting practice apparatus for attachment to a pre-existing support includes an elongated member having two ends. The elongated member is attached at one of its ends to two tethers. The first tether is resilient and the second tether is a fixed-length tether. Both ends of the two tet
A portable ball batting practice apparatus for attachment to a support, comprising: a) an elongated member; b) a resilient tether having first and second ends, wherein said resilient tether first end is secured to said elongated member at a connection point; c) a fixed-length tether having first and
※ AI-Helper는 부적절한 답변을 할 수 있습니다.