JPS62178295U - - Google Patents
Info
- Publication number
- JPS62178295U JPS62178295U JP6790886U JP6790886U JPS62178295U JP S62178295 U JPS62178295 U JP S62178295U JP 6790886 U JP6790886 U JP 6790886U JP 6790886 U JP6790886 U JP 6790886U JP S62178295 U JPS62178295 U JP S62178295U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- microphone
- audio
- transmission line
- battery power
- 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
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 230000005236 sound signal Effects 0.000 claims 2
- 230000009189 diving Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Helmets And Other Head Coverings (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6790886U JPS62178295U (OSRAM) | 1986-05-06 | 1986-05-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6790886U JPS62178295U (OSRAM) | 1986-05-06 | 1986-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62178295U true JPS62178295U (OSRAM) | 1987-11-12 |
Family
ID=30907239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6790886U Pending JPS62178295U (OSRAM) | 1986-05-06 | 1986-05-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62178295U (OSRAM) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US342579A (en) * | 1886-05-25 | Nailing-jack | ||
| US3427579A (en) * | 1966-10-06 | 1969-02-11 | George J Sebesta | Underwater communication transducers |
| JPS4923439U (OSRAM) * | 1972-06-08 | 1974-02-27 | ||
| JPS60160233A (ja) * | 1984-01-31 | 1985-08-21 | O D S Marine:Kk | 水中通信方法およびその装置 |
-
1986
- 1986-05-06 JP JP6790886U patent/JPS62178295U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US342579A (en) * | 1886-05-25 | Nailing-jack | ||
| US3427579A (en) * | 1966-10-06 | 1969-02-11 | George J Sebesta | Underwater communication transducers |
| JPS4923439U (OSRAM) * | 1972-06-08 | 1974-02-27 | ||
| JPS60160233A (ja) * | 1984-01-31 | 1985-08-21 | O D S Marine:Kk | 水中通信方法およびその装置 |
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