A level straight edge with spikes
- 专利权人:
- STEPHEN PAUL * KING
- 发明人:
- STEPHEN PAUL * KING
- 申请号：
- GB20010013741
- 公开号：
- GB2376261(A)
- 申请日:
- 2001.06.06
- 申请国别(地区):
- 英国
- 年份:
- 2002
- 代理人:
- 摘要：
- 来源网站：
- 中国工程科技知识中心
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