NL54077C - - Google Patents
Info
- Publication number
- NL54077C NL54077C NL54077DA NL54077C NL 54077 C NL54077 C NL 54077C NL 54077D A NL54077D A NL 54077DA NL 54077 C NL54077 C NL 54077C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/16—Monitoring arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE210928X | 1938-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54077C true NL54077C (en:Method) |
Family
ID=5799965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54077D NL54077C (en:Method) | 1938-07-22 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2232063A (en:Method) |
| CH (1) | CH210928A (en:Method) |
| NL (1) | NL54077C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE865006C (de) * | 1941-11-29 | 1953-01-29 | Siemens Ag | Schaltungsanordnung zur Betriebsueberwachung von Traegerfrequenzsystemen |
-
0
- NL NL54077D patent/NL54077C/xx active
-
1939
- 1939-06-21 CH CH210928D patent/CH210928A/de unknown
- 1939-07-22 US US285848A patent/US2232063A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2232063A (en) | 1941-02-18 |
| CH210928A (de) | 1940-08-15 |