PLOUGH BEAM WITH SPRING MECHANISM
- 专利权人:
- KVERNELANDS FABRIKK AS,NO
- 发明人:
- NJA O,NO
- 申请号:
- USD3789928
- 公开号:
- US3789928(A)
- 申请日:
- 1972.05.19
- 申请国别(地区):
- 美国
- 年份:
- 1974
- 代理人:
- 摘要:
- A plough beam having a spring mechanism which permits, lateral sidewise motions in addition to motions up and down when encountering an obstacle.
- 来源网站:
- 中国工程科技知识中心