发明名称 Manual slide post driver and extractor for T-type metal or fiberglass or plastic posts
摘要 A post driving device is disclosed. The post driving device slides to a desired position and is essentially locked in place through frictional force. As the post is driven into the ground, the device can be adjusted to a new position along the length of the post.
申请公布号 US7111690(B2) 申请公布日期 2006.09.26
申请号 US20030434539 申请日期 2003.05.09
申请人 KLEINERT R AMIL 发明人 KLEINERT R. AMIL
分类号 B25D9/00;E02D7/04;E04H17/26 主分类号 B25D9/00
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