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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0864865 (1977-12-27) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 6 인용 특허 : 0 |
A block puzzle consisting of three blocks, one being characteristically “O”-shaped and the other two each being characteristically “C”-shaped, is described. The blocks are slidably engageable into a mutually perpendicular interlocking arrangement in which each block passes through the other two bloc
A block puzzle consisting of: (a) a first block having a characteristic “O”-shape imparted by a non-rectangular aperture in said first block; and (b) second and third blocks, each of which blocks has a characteristic “C”-shape imparted by a “T”-shaped slot in the block; said blocks being slidably en
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