NL71860C - - Google Patents
Info
- Publication number
- NL71860C NL71860C NL71860DA NL71860C NL 71860 C NL71860 C NL 71860C NL 71860D A NL71860D A NL 71860DA NL 71860 C NL71860 C NL 71860C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
- Headphones And Earphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65757846 US2470292A (en) | 1946-03-27 | 1946-03-27 | Switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL71860C true NL71860C (ja) | 1900-01-01 |
Family
ID=24637784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL71860D NL71860C (ja) | 1946-03-27 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2470292A (ja) |
| GB (1) | GB640157A (ja) |
| NL (1) | NL71860C (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3054858A (en) * | 1959-05-12 | 1962-09-18 | Ar & T Electronics Inc | Signal distribution arrangement for closed-circuit communications systems |
| JPS55150627A (en) * | 1979-05-14 | 1980-11-22 | Nec Corp | Signal synthesizing circuit |
| JPS58219820A (ja) * | 1982-06-14 | 1983-12-21 | Pioneer Electronic Corp | 回路機器の制御システム |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1658825A (en) * | 1926-01-20 | 1928-02-14 | Donald L Wolf | Radio central-station system |
-
0
- NL NL71860D patent/NL71860C/xx active
-
1946
- 1946-03-27 US US65757846 patent/US2470292A/en not_active Expired - Lifetime
-
1947
- 1947-03-03 GB GB604847A patent/GB640157A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB640157A (en) | 1950-07-12 |
| US2470292A (en) | 1949-05-17 |