| 发明名称 |
Piston for precision dosing instrument |
| 摘要 |
A piston for a precision dosing instrument includes a cylindrical core which may be made of glass, ceramic or metal, and a precision ground sleeve of polytetrafluorethylene disposed over the core. One end of the sleeve is closed while the core is open at both ends.
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| 申请公布号 |
US4633765(A) |
申请公布日期 |
1987.01.06 |
| 申请号 |
US19840679959 |
申请日期 |
1984.12.10 |
| 申请人 |
WALTER GRAF U. CO GMBH & CO. |
发明人 |
KNOEDEL, ERICH |
| 分类号 |
F16J1/02;(IPC1-7):B23P15/10 |
主分类号 |
F16J1/02 |
| 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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