FR951756A - Installation téléphonique - Google Patents
Installation téléphoniqueInfo
- Publication number
- FR951756A FR951756A FR951756DA FR951756A FR 951756 A FR951756 A FR 951756A FR 951756D A FR951756D A FR 951756DA FR 951756 A FR951756 A FR 951756A
- Authority
- FR
- France
- Prior art keywords
- telephone installation
- telephone
- installation
- 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
- 238000009434 installation Methods 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
- H04Q5/06—Signalling by amplitude or polarity of DC
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US231477A US2206538A (en) | 1938-09-24 | 1938-09-24 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR951756A true FR951756A (fr) | 1949-11-03 |
Family
ID=22869388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR951756D Expired FR951756A (fr) | 1938-09-24 | 1947-08-07 | Installation téléphonique |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR951756A (fr) |
-
1947
- 1947-08-07 FR FR951756D patent/FR951756A/fr not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH235884A (fr) | Installation téléphonique. | |
| CH286287A (fr) | Installation téléphonique. | |
| FR849033A (fr) | Standard téléphonique | |
| FR848445A (fr) | Installation téléphonique | |
| FR853368A (fr) | Installation de pompage | |
| FR951756A (fr) | Installation téléphonique | |
| FR847317A (fr) | Installation téléphonique | |
| CH229316A (fr) | Installation de télécommunication. | |
| FR836901A (fr) | Installation dentaire | |
| DK57984C (da) | Telefonanlæg. | |
| CH219194A (fr) | Installation calculatrice. | |
| FR853409A (fr) | écouteur téléphonique | |
| FI19249A (fi) | Snöplogvinge | |
| FI19606A (fi) | Hopfällbar äggkartong | |
| FI19169A (fi) | Krage | |
| FI19185A (fi) | Limämne | |
| FI19241A (fi) | Suksiside | |
| ES144035A1 (es) | HELIoGRAFO FILTRALUZ | |
| FI19273A (fi) | Suksiside | |
| FI19274A (fi) | Suksiside | |
| FI19302A (fi) | Vätsketät behållare | |
| FI19384A (fi) | Kylapparat | |
| FI19434A (fi) | Värmeutbytesanordning | |
| FI19465A (fi) | Träfiberplatta | |
| FI19468A (fi) | Metalltub |