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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0531502 (1990-05-31) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 125 인용 특허 : 0 |
Concrete blocks are formed in a mold having a cavity into which block-forming material is placed. A portion of the material is retained in place relative to the cavity walls when the block is removed from the cavity, and the face of the block forming material adjacent a surface of the material retai
A method of forming a block, comprising the steps of: providing a cavity defined by a lower support member and one or more walls extending upwardly therefrom, with said lower support member and said one or more walls being capable of relative vertical movement therebetween; placing a block forming m
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