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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0350087 (1982-02-18) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 3 |
A method for molding an article, such as a preform, used in making information recorded discs, includes use of top and bottom mold members having recesses in their approved surfaces. The top mold member is mounted on the end of the piston rod of a pneumatic cylinder which is adapted to move the top
A method of molding an article in a mold which includes at least two mold members having opposed recesses which are adapted to mate to form a mold cavity, a pneumatic cylinder for moving the mold members toward each other to a collapsed position in which the mold cavity is of a volume less than the
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