| 发明名称 |
Method of forming a spacer used to space end to end piping |
| 摘要 |
A method of forming undulate protrusions on a split ring with the ring placed in a die to first form a center protrusion and then to form the other protrusions located between the first formed protrusion and the ring ends.
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| 申请公布号 |
US5253507(A) |
申请公布日期 |
1993.10.19 |
| 申请号 |
US19920912266 |
申请日期 |
1992.07.13 |
| 申请人 |
G.A.L. GAGE CO. |
发明人 |
LYCAN, GOODWIN A. |
| 分类号 |
B21F37/02;(IPC1-7):B21F37/00 |
主分类号 |
B21F37/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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