NL36507C - - Google Patents
Info
- Publication number
- NL36507C NL36507C NL36507DA NL36507C NL 36507 C NL36507 C NL 36507C NL 36507D A NL36507D A NL 36507DA NL 36507 C NL36507 C NL 36507C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE670137T | 1930-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL36507C true NL36507C (https=) |
Family
ID=6590309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL36507D NL36507C (https=) | 1930-09-24 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE670137C (https=) |
| NL (1) | NL36507C (https=) |
-
0
- NL NL36507D patent/NL36507C/xx active
-
1930
- 1930-09-24 DE DE1930670137D patent/DE670137C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE670137C (de) | 1939-01-12 |