NL26285C - - Google Patents
Info
- Publication number
- NL26285C NL26285C NL26285DA NL26285C NL 26285 C NL26285 C NL 26285C NL 26285D A NL26285D A NL 26285DA NL 26285 C NL26285 C NL 26285C
- Authority
- NL
- Netherlands
Links
Classifications
- 
        - H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
- H04M3/64—Arrangements for signalling the number or class of the calling line to the operator
 
- 
        - H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
 
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| FR654299T | 1928-05-14 | 
Publications (1)
| Publication Number | Publication Date | 
|---|---|
| NL26285C true NL26285C (en:Method) | 
Family
ID=9006415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date | 
|---|---|---|---|
| NL26285D NL26285C (en:Method) | 1928-05-14 | 
Country Status (3)
| Country | Link | 
|---|---|
| BE (1) | BE351197A (en:Method) | 
| FR (1) | FR654299A (en:Method) | 
| NL (1) | NL26285C (en:Method) | 
- 
        0
        - BE BE351197D patent/BE351197A/xx unknown
- NL NL26285D patent/NL26285C/xx active
 
- 
        1928
        - 1928-05-14 FR FR654299D patent/FR654299A/fr not_active Expired
 
Also Published As
| Publication number | Publication date | 
|---|---|
| BE351197A (en:Method) | |
| FR654299A (fr) | 1929-04-04 |