| 发明名称 |
Respirator cartridge end-of-service life indicator |
| 摘要 |
Visual indication of respirator cartridge end-of-service life is accomplished with color indicator means particularly designed for long term shelf life and an adaptability to respond to both water soluble and water insoluble organic vapors.
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| 申请公布号 |
US4530706(A) |
申请公布日期 |
1985.07.23 |
| 申请号 |
US19810312201 |
申请日期 |
1981.10.19 |
| 申请人 |
AMERICAN OPTICAL CORPORATION |
发明人 |
JONES, JOHN A. |
| 分类号 |
B01D53/02;G01N21/78;G01N31/22;(IPC1-7):B01D50/00 |
主分类号 |
B01D53/02 |
| 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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