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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0240535 (1981-03-04) |
우선권정보 | DE-3009615 (1980-03-13) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 3 인용 특허 : 2 |
Apparatus for milling building blocks comprise a first arrangement for milling said blocks at a first side thereof, and a second arrangement for milling said blocks at a second side thereof. Apparatus are located between the mentioned first and second arrangements for accelerating the blocks after t
Apparatus for milling building blocks at opposite first and second sides in two steps, comprising in combination: first means for milling said blocks at said first side thereof in a first one of said steps; second means for milling said blocks at said second side thereof in the second one of said tw
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