JPH0444756U - - Google Patents
Info
- Publication number
- JPH0444756U JPH0444756U JP8633390U JP8633390U JPH0444756U JP H0444756 U JPH0444756 U JP H0444756U JP 8633390 U JP8633390 U JP 8633390U JP 8633390 U JP8633390 U JP 8633390U JP H0444756 U JPH0444756 U JP H0444756U
- Authority
- JP
- Japan
- Prior art keywords
- volume
- comparison
- button telephone
- circuit
- electrical
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8633390U JPH0444756U (en, 2012) | 1990-08-16 | 1990-08-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8633390U JPH0444756U (en, 2012) | 1990-08-16 | 1990-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444756U true JPH0444756U (en, 2012) | 1992-04-16 |
Family
ID=31817950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8633390U Pending JPH0444756U (en, 2012) | 1990-08-16 | 1990-08-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444756U (en, 2012) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS591573B2 (ja) * | 1973-01-20 | 1984-01-12 | 呉羽化学工業株式会社 | ネツカソセイジユシパイプナイソウカコウホウ |
| JPS62214799A (ja) * | 1986-03-14 | 1987-09-21 | Iwatsu Electric Co Ltd | 電話装置 |
| JPS62269452A (ja) * | 1986-05-19 | 1987-11-21 | Nec Corp | 受話音量自動調節式電話機 |
| JPS63253794A (ja) * | 1987-04-09 | 1988-10-20 | Nec Corp | ボタン電話装置 |
-
1990
- 1990-08-16 JP JP8633390U patent/JPH0444756U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS591573B2 (ja) * | 1973-01-20 | 1984-01-12 | 呉羽化学工業株式会社 | ネツカソセイジユシパイプナイソウカコウホウ |
| JPS62214799A (ja) * | 1986-03-14 | 1987-09-21 | Iwatsu Electric Co Ltd | 電話装置 |
| JPS62269452A (ja) * | 1986-05-19 | 1987-11-21 | Nec Corp | 受話音量自動調節式電話機 |
| JPS63253794A (ja) * | 1987-04-09 | 1988-10-20 | Nec Corp | ボタン電話装置 |