NL91655C - - Google Patents
Info
- Publication number
- NL91655C NL91655C NL91655DA NL91655C NL 91655 C NL91655 C NL 91655C NL 91655D A NL91655D A NL 91655DA NL 91655 C NL91655 C NL 91655C
- Authority
- NL
- Netherlands
Links
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
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL91655C true NL91655C (en) | 1900-01-01 |
Family
ID=1835458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL91655D NL91655C (en) |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL91655C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2118090A1 (en) * | 1970-12-18 | 1972-07-28 | Ibm |
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0
- NL NL91655D patent/NL91655C/xx active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2118090A1 (en) * | 1970-12-18 | 1972-07-28 | Ibm |