JPS56119056A - Double resonance type sound absorbing concrete block - Google Patents
Double resonance type sound absorbing concrete blockInfo
- Publication number
- JPS56119056A JPS56119056A JP2239980A JP2239980A JPS56119056A JP S56119056 A JPS56119056 A JP S56119056A JP 2239980 A JP2239980 A JP 2239980A JP 2239980 A JP2239980 A JP 2239980A JP S56119056 A JPS56119056 A JP S56119056A
- Authority
- JP
- Japan
- Prior art keywords
- sound absorbing
- concrete block
- resonance type
- type sound
- double resonance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2239980A JPS56119056A (en) | 1980-02-25 | 1980-02-25 | Double resonance type sound absorbing concrete block |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2239980A JPS56119056A (en) | 1980-02-25 | 1980-02-25 | Double resonance type sound absorbing concrete block |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56119056A true JPS56119056A (en) | 1981-09-18 |
Family
ID=12081579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2239980A Pending JPS56119056A (en) | 1980-02-25 | 1980-02-25 | Double resonance type sound absorbing concrete block |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56119056A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4811234U (en) * | 1971-06-22 | 1973-02-08 | ||
JPS5342974A (en) * | 1976-09-29 | 1978-04-18 | Reppas George S | Combined bed and desk |
-
1980
- 1980-02-25 JP JP2239980A patent/JPS56119056A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4811234U (en) * | 1971-06-22 | 1973-02-08 | ||
JPS5342974A (en) * | 1976-09-29 | 1978-04-18 | Reppas George S | Combined bed and desk |
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