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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0180552 (1994-01-12) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 29 인용 특허 : 0 |
A toothbrush includes a handgrip portion and a head portion pivoted to the handgrip portion and movable between a folded position and a stretched position. The head portion includes a pair of lugs with a pair of first positioning notches and a pair of second positioning notches which are spaced angu
A toothbrush comprising: an elongated handgrip portion and an elongated head portion which is pivoted to said handgrip portion and movable between a folded position and a stretched position; said elongated head portion having a front end provided with a bristle unit and a rear end provided with a sp
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