BE545026A - - Google Patents
Info
- Publication number
- BE545026A BE545026A BE545026DA BE545026A BE 545026 A BE545026 A BE 545026A BE 545026D A BE545026D A BE 545026DA BE 545026 A BE545026 A BE 545026A
- Authority
- BE
- Belgium
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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/47—One nitrogen atom and one oxygen or sulfur atom, e.g. cytosine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/48—Two nitrogen atoms
- C07D239/49—Two nitrogen atoms with an aralkyl radical, or substituted aralkyl radical, attached in position 5, e.g. trimethoprim
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/04—Distributors combined with modulators or demodulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE718155X | 1951-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE545026A true BE545026A (xx) | 1959-10-09 |
Family
ID=6626875
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE513500D BE513500A (xx) | 1951-08-13 | 1952-08-13 | |
| BE545026D BE545026A (xx) | 1951-08-13 | 1956-02-07 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE513500D BE513500A (xx) | 1951-08-13 | 1952-08-13 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2747023A (xx) |
| BE (2) | BE513500A (xx) |
| DE (2) | DE897853C (xx) |
| FR (2) | FR1090934A (xx) |
| GB (1) | GB718155A (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1003272B (de) * | 1957-06-26 | 1957-02-28 | Siemens Ag | Zahlengeber mit einem Abgreifer, der zur Bestimmung der Stromstosszahl von Stromstossreihen durch Speicherkontakte gekennzeichnete Markierpunkte sucht, insbesondere fuer Fernsprechanlagen |
| US3308433A (en) * | 1963-01-10 | 1967-03-07 | Rca Corp | Switching matrix |
| DE3045512C2 (de) * | 1980-12-03 | 1982-10-07 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Elektronische Durchschalteinrichtung für Fernseh- und Tonrundfunkprogramme |
| WO2016018936A1 (en) | 2014-07-28 | 2016-02-04 | Econolite Group, Inc. | Self-configuring traffic signal controller |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2117639A (en) * | 1935-08-07 | 1938-05-17 | Fay G Johnson | Traffic signal |
| US2541932A (en) * | 1948-05-19 | 1951-02-13 | Bell Telephone Labor Inc | Multiplex speech interpolation system |
| BE496916A (xx) * | 1949-07-29 |
-
1951
- 1951-08-13 DE DES24396A patent/DE897853C/de not_active Expired
-
1952
- 1952-07-30 US US30164752 patent/US2747023A/en not_active Expired - Lifetime
- 1952-08-05 FR FR1090934D patent/FR1090934A/fr not_active Expired
- 1952-08-13 GB GB2036152A patent/GB718155A/en not_active Expired
- 1952-08-13 BE BE513500D patent/BE513500A/xx unknown
-
1955
- 1955-02-08 DE DES42610A patent/DE951458C/de not_active Expired
-
1956
- 1956-02-06 FR FR69952D patent/FR69952E/fr not_active Expired
- 1956-02-07 BE BE545026D patent/BE545026A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1090934A (fr) | 1955-04-05 |
| BE513500A (xx) | 1952-08-30 |
| FR69952E (fr) | 1959-01-30 |
| US2747023A (en) | 1956-05-22 |
| DE897853C (de) | 1953-11-26 |
| DE951458C (de) | 1956-10-31 |
| GB718155A (en) | 1954-11-10 |