| 发明名称 |
SOUNDPROOF DOOR |
| 摘要 |
PROBLEM TO BE SOLVED: To provide a soundproof door, which has a high sound-insulating effect and can be lightened and the cost of which can be reduced. SOLUTION: The door bodies 13 and 14 of the soundproof door 1 are formed in a hermetically sealed hollow shape, and the insides of these door bodies 13 and 14 are evacuated.
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| 申请公布号 |
JP2001355400(A) |
申请公布日期 |
2001.12.26 |
| 申请号 |
JP20000102521 |
申请日期 |
2000.04.04 |
| 申请人 |
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL & TECHNOLOGY;KATSUYAMA KUNIHISA;MAEDA CORP |
发明人 |
KATSUYAMA KUNIHISA;INOUE HIROYUKI;IGARASHI MIZUHO |
| 分类号 |
E21F17/12;E06B5/20;(IPC1-7):E21F17/12 |
主分类号 |
E21F17/12 |
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