Apparatus for manufacturing a hose for taking an undisturbed soil sample |
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申请号 | US3543722D | 申请日 | 1968-04-03 | 公开(公告)号 | US3543722A | 公开(公告)日 | 1970-12-01 |
申请人 | STITCHTING WATERBOUWKUNDIG LAB; | 发明人 | BOS HENDRIKUS J; MANN ADRIAAN B; | ||||
摘要 | |||||||
权利要求 | |||||||
说明书全文 |