NL32175C - - Google Patents
Info
- Publication number
- NL32175C NL32175C NL32175DA NL32175C NL 32175 C NL32175 C NL 32175C NL 32175D A NL32175D A NL 32175DA NL 32175 C NL32175 C NL 32175C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
-
- 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
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Testing Relating To Insulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE368707X | 1929-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL32175C true NL32175C (https=) |
Family
ID=6318128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL32175D NL32175C (https=) | 1929-12-02 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE375450A (https=) |
| FR (1) | FR706755A (https=) |
| GB (1) | GB368707A (https=) |
| NL (1) | NL32175C (https=) |
-
0
- BE BE375450D patent/BE375450A/xx unknown
- NL NL32175D patent/NL32175C/xx active
-
1930
- 1930-12-01 FR FR706755D patent/FR706755A/fr not_active Expired
- 1930-12-01 GB GB36219/30A patent/GB368707A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB368707A (en) | 1932-03-01 |
| BE375450A (https=) | |
| FR706755A (fr) | 1931-06-29 |