ROLLER BEARING PRUNER
- 专利权人:
- 发明人:
- Linn E. Nelson,Karl H. Zeller
- 申请号：
- US15441012
- 公开号：
- US20170245439A1
- 申请日:
- 2017.02.23
- 申请国别(地区):
- US
- 年份:
- 2017
- 代理人:
- 摘要：
- A pruner comprises a pair of handles held in cooperative movement relation by a pivot lubrication bolt. A bearing such as a needle roller bearing is employed to provide superior operation.
- 来源网站：
- 中国工程科技知识中心
