| 发明名称 |
Dual density filter cartridge |
| 摘要 |
The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.
|
| 申请公布号 |
US2004238426(A9) |
申请公布日期 |
2004.12.02 |
| 申请号 |
US20040776042 |
申请日期 |
2004.02.10 |
| 申请人 |
|
发明人 |
FOX JOHN EDWARD;PARKER RODNEY ALLEN |
| 分类号 |
A01K63/04;(IPC1-7):E04H3/16;B01D24/04 |
主分类号 |
A01K63/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
