BE541698A - - Google Patents
Info
- Publication number
- BE541698A BE541698A BE541698DA BE541698A BE 541698 A BE541698 A BE 541698A BE 541698D A BE541698D A BE 541698DA BE 541698 A BE541698 A BE 541698A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
- Amplifiers (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US461145A US2808462A (en) | 1954-10-08 | 1954-10-08 | Subscriber telephone set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE541698A true BE541698A (en, 2012) |
Family
ID=23831397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE541698D BE541698A (en, 2012) | 1954-10-08 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2808462A (en, 2012) |
| BE (1) | BE541698A (en, 2012) |
| DE (1) | DE1096423B (en, 2012) |
| FR (1) | FR1125692A (en, 2012) |
| GB (1) | GB773850A (en, 2012) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3020351A (en) * | 1957-03-20 | 1962-02-06 | Gen Dynamics Corp | Directional coupling network |
| US3492439A (en) * | 1965-11-10 | 1970-01-27 | Amtron | Telephone signalling circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB679875A (en) * | 1949-03-16 | 1952-09-24 | Siemens Ag | Improvements in or relating to an arrangement for telephone subscribers sets |
| DE862917C (de) * | 1951-07-12 | 1953-01-15 | Siemens Ag | Fernsprechstation mit Kohlemikrofon und Speisung vom Amt |
-
0
- BE BE541698D patent/BE541698A/xx unknown
-
1954
- 1954-10-08 US US461145A patent/US2808462A/en not_active Expired - Lifetime
-
1955
- 1955-06-02 FR FR1125692D patent/FR1125692A/fr not_active Expired
- 1955-08-23 DE DEW17360A patent/DE1096423B/de active Pending
- 1955-09-30 GB GB27877/55A patent/GB773850A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB773850A (en) | 1957-05-01 |
| DE1096423B (de) | 1961-01-05 |
| FR1125692A (fr) | 1956-11-05 |
| US2808462A (en) | 1957-10-01 |