NL221978A - - Google Patents
Info
- Publication number
- NL221978A NL221978A NL221978DA NL221978A NL 221978 A NL221978 A NL 221978A NL 221978D A NL221978D A NL 221978DA NL 221978 A NL221978 A NL 221978A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C11/00—Non-adjustable liquid resistors
-
- 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)
- Signal Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES51084A DE1039579B (de) | 1956-10-23 | 1956-10-31 | Mehrdeutigkeitspruefer zur Abgabe eines Signals, wenn gleichzeitig mehrere Potentialquellen einer Mehrzahl von funktionell zusammengehoerenden Potentialquellen ein bestimmtes Schaltpotential aufweisen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL221978A true NL221978A (https=) |
Family
ID=7488086
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL107971D NL107971C (https=) | 1956-10-31 | ||
| NL221978D NL221978A (https=) | 1956-10-31 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL107971D NL107971C (https=) | 1956-10-31 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE562080A (https=) |
| CH (1) | CH362128A (https=) |
| NL (2) | NL221978A (https=) |
-
0
- BE BE562080D patent/BE562080A/xx unknown
- NL NL107971D patent/NL107971C/xx active
- NL NL221978D patent/NL221978A/xx unknown
-
1957
- 1957-10-23 CH CH362128D patent/CH362128A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE562080A (https=) | |
| CH362128A (de) | 1962-05-31 |
| NL107971C (https=) |