BE468639A - - Google Patents
Info
- Publication number
- BE468639A BE468639A BE468639DA BE468639A BE 468639 A BE468639 A BE 468639A BE 468639D A BE468639D A BE 468639DA BE 468639 A BE468639 A BE 468639A
- Authority
- BE
- Belgium
- Prior art keywords
- relay
- relays
- frequency
- switch
- contacts
- Prior art date
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE468639A true BE468639A (en:Method) |
Family
ID=119330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE468639D BE468639A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE468639A (en:Method) |
-
0
- BE BE468639D patent/BE468639A/fr unknown
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