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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0736482 (1976-10-28) |
우선권정보 | JA-0137247 (1975-11-17); JA-0104523 (1976-01-09); JA-0104524 (1976-01-09); JA-0105642 (1976-02-09) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 4 인용 특허 : 0 |
A method of manufacturing a double-structure sound absorbing wall having a cavity defined by joining first and second plate members, comprising the steps of providing said first and second plate members with gas bleeding holes and recesses depressed toward the inside of said cavity to abut the membe
A method of manufacturing a double-structure sound absorbing wall for a vehicle, said sound absorbing wall having a cavity defined by joining peripheral edges of first and second plate members, said method comprising the steps of providing said first and second plate members with gas bleeding holes
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