JPH03114897U - - Google Patents
Info
- Publication number
- JPH03114897U JPH03114897U JP2310690U JP2310690U JPH03114897U JP H03114897 U JPH03114897 U JP H03114897U JP 2310690 U JP2310690 U JP 2310690U JP 2310690 U JP2310690 U JP 2310690U JP H03114897 U JPH03114897 U JP H03114897U
- Authority
- JP
- Japan
- Prior art keywords
- acoustic reflector
- acoustic
- reflector
- focal point
- side edge
- 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.)
- Granted
Links
- 239000011358 absorbing material Substances 0.000 description 1
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990023106U JPH087439Y2 (ja) | 1990-03-07 | 1990-03-07 | 音響反射集束装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990023106U JPH087439Y2 (ja) | 1990-03-07 | 1990-03-07 | 音響反射集束装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03114897U true JPH03114897U (en]) | 1991-11-26 |
| JPH087439Y2 JPH087439Y2 (ja) | 1996-03-04 |
Family
ID=31526105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990023106U Expired - Lifetime JPH087439Y2 (ja) | 1990-03-07 | 1990-03-07 | 音響反射集束装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087439Y2 (en]) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230506A (ja) * | 2009-03-27 | 2010-10-14 | Railway Technical Res Inst | 鉄道車両の車軸軸受の異常検知装置及びその方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0349398A (ja) * | 1989-07-17 | 1991-03-04 | Nippon Telegr & Teleph Corp <Ntt> | 音声入出力方式 |
-
1990
- 1990-03-07 JP JP1990023106U patent/JPH087439Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0349398A (ja) * | 1989-07-17 | 1991-03-04 | Nippon Telegr & Teleph Corp <Ntt> | 音声入出力方式 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230506A (ja) * | 2009-03-27 | 2010-10-14 | Railway Technical Res Inst | 鉄道車両の車軸軸受の異常検知装置及びその方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087439Y2 (ja) | 1996-03-04 |