JPS4929704A - - Google Patents
Info
- Publication number
- JPS4929704A JPS4929704A JP47066405A JP6640572A JPS4929704A JP S4929704 A JPS4929704 A JP S4929704A JP 47066405 A JP47066405 A JP 47066405A JP 6640572 A JP6640572 A JP 6640572A JP S4929704 A JPS4929704 A JP S4929704A
- Authority
- JP
- Japan
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00249529A US3819873A (en) | 1972-05-02 | 1972-05-02 | Telephone call indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4929704A true JPS4929704A (ja) | 1974-03-16 |
Family
ID=22943869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP47066405A Pending JPS4929704A (ja) | 1972-05-02 | 1972-07-04 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3819873A (ja) |
| JP (1) | JPS4929704A (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290212A (en) * | 1976-01-22 | 1977-07-29 | Saito Nobuo | Contactless repeater for ac signal |
| JPS5394705A (en) * | 1977-01-24 | 1978-08-19 | Meisei Electric Co Ltd | Incoming confirmation indicator |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028500A (en) * | 1973-05-15 | 1977-06-07 | Martin Marietta Corporation | Mobile unit supervisory control sequencer and method |
| US4088839A (en) * | 1975-10-14 | 1978-05-09 | Stein Jr Anthony C | Telephone call timer |
| CH615999A5 (ja) * | 1977-04-29 | 1980-02-29 | Jucker Jules & Co | |
| US4951311A (en) * | 1989-07-10 | 1990-08-21 | Sterr Kevin K | Telephone call indicator |
| US7130666B2 (en) * | 2002-11-18 | 2006-10-31 | United Global Sourcing, Inc. | Cell phone charger with incoming call indicator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3226489A (en) * | 1962-10-24 | 1965-12-28 | Russel J Grambsch | Communications control system |
| US3320368A (en) * | 1964-02-28 | 1967-05-16 | G J Mcgrath | Telephone message-waiting monitoring device |
| US3322903A (en) * | 1964-03-12 | 1967-05-30 | Bell Telephone Labor Inc | Telephone signaling system |
| US3585303A (en) * | 1968-10-21 | 1971-06-15 | Alexander B Chieffo | Telephone communication system for the deaf |
-
1972
- 1972-05-02 US US00249529A patent/US3819873A/en not_active Expired - Lifetime
- 1972-07-04 JP JP47066405A patent/JPS4929704A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290212A (en) * | 1976-01-22 | 1977-07-29 | Saito Nobuo | Contactless repeater for ac signal |
| JPS5394705A (en) * | 1977-01-24 | 1978-08-19 | Meisei Electric Co Ltd | Incoming confirmation indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| US3819873A (en) | 1974-06-25 |