AU473616B2 - Improvements in or relating to electric circuits for telephone instruments - Google Patents
Improvements in or relating to electric circuits for telephone instrumentsInfo
- Publication number
- AU473616B2 AU473616B2 AU51136/73A AU5113673A AU473616B2 AU 473616 B2 AU473616 B2 AU 473616B2 AU 51136/73 A AU51136/73 A AU 51136/73A AU 5113673 A AU5113673 A AU 5113673A AU 473616 B2 AU473616 B2 AU 473616B2
- Authority
- AU
- Australia
- Prior art keywords
- relating
- electric circuits
- telephone instruments
- instruments
- telephone
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB585172A GB1370956A (en) | 1972-02-08 | 1972-02-08 | Electric circuits for telephone instruments |
| GBGB5851/72 | 1972-02-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU5113673A AU5113673A (en) | 1974-07-18 |
| AU473616B2 true AU473616B2 (en) | 1976-06-24 |
Family
ID=9803826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU51136/73A Expired AU473616B2 (en) | 1972-02-08 | 1973-01-16 | Improvements in or relating to electric circuits for telephone instruments |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU473616B2 (en) |
| GB (1) | GB1370956A (en) |
| IT (1) | IT977696B (en) |
| ZA (1) | ZA73305B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064366A (en) * | 1976-01-15 | 1977-12-20 | Winster Engineering Group Limited | Intrinsically safe telephone systems |
| US4691344A (en) * | 1986-01-21 | 1987-09-01 | Aquatrol Corporation | Low-powered remote sensor and telephone line transmitter |
| US4893332A (en) * | 1986-05-12 | 1990-01-09 | Aquatrol Corporation | Low-powered remote sensor |
| DE19619610A1 (en) * | 1996-05-15 | 1997-11-20 | Bosch Gmbh Robert | Telephone device |
-
1972
- 1972-02-08 GB GB585172A patent/GB1370956A/en not_active Expired
-
1973
- 1973-01-16 ZA ZA730305A patent/ZA73305B/en unknown
- 1973-01-16 AU AU51136/73A patent/AU473616B2/en not_active Expired
- 1973-01-29 IT IT7367173A patent/IT977696B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT977696B (en) | 1974-09-20 |
| GB1370956A (en) | 1974-10-16 |
| AU5113673A (en) | 1974-07-18 |
| ZA73305B (en) | 1973-10-31 |
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