JPH01126758U - - Google Patents
Info
- Publication number
- JPH01126758U JPH01126758U JP2419588U JP2419588U JPH01126758U JP H01126758 U JPH01126758 U JP H01126758U JP 2419588 U JP2419588 U JP 2419588U JP 2419588 U JP2419588 U JP 2419588U JP H01126758 U JPH01126758 U JP H01126758U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- intercom
- sound signal
- calling
- ringing
- 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
- 230000005236 sound signal Effects 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2419588U JPH01126758U (hu) | 1988-02-24 | 1988-02-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2419588U JPH01126758U (hu) | 1988-02-24 | 1988-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01126758U true JPH01126758U (hu) | 1989-08-30 |
Family
ID=31243839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2419588U Pending JPH01126758U (hu) | 1988-02-24 | 1988-02-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01126758U (hu) |
-
1988
- 1988-02-24 JP JP2419588U patent/JPH01126758U/ja active Pending