发明名称 |
Post driver |
摘要 |
A post driver for inserting or removing marker posts into the ground. The driver comprises two components, the hammer and the bracket, which cooperate in a safe and efficient means for installing and removing marker posts. The hammer locks around the post and the bracket attaches to the vertically aligned holes which are located on the face of the post.
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申请公布号 |
US4971479(A) |
申请公布日期 |
1990.11.20 |
申请号 |
US19870141383 |
申请日期 |
1987.12.14 |
申请人 |
SOUTHWESTERN BELL TELEPHONE COMPANY |
发明人 |
BYERS, SR., ALVIN H.;BROOKS, CLAYTON F. |
分类号 |
E01F9/011;E02D7/04;E04H17/26 |
主分类号 |
E01F9/011 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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