NL80231C - - Google Patents
Info
- Publication number
- NL80231C NL80231C NL80231DA NL80231C NL 80231 C NL80231 C NL 80231C NL 80231D A NL80231D A NL 80231DA NL 80231 C NL80231 C NL 80231C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/12—Arrangements providing for calling or supervisory signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1035500T | 1951-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL80231C true NL80231C (en:Method) |
Family
ID=9585787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL80231D NL80231C (en:Method) | 1951-04-17 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2794072A (en:Method) |
| BE (1) | BE510681A (en:Method) |
| CH (1) | CH299885A (en:Method) |
| FR (1) | FR1035500A (en:Method) |
| GB (1) | GB697280A (en:Method) |
| NL (1) | NL80231C (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE570384A (en:Method) * | 1957-08-16 | |||
| US3205312A (en) * | 1960-12-23 | 1965-09-07 | Gen Dynamics Corp | Off-hook detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR959009A (en:Method) * | 1946-07-08 | 1950-03-23 | ||
| NL72570C (en:Method) * | 1949-09-02 |
-
0
- NL NL80231D patent/NL80231C/xx active
- BE BE510681D patent/BE510681A/xx unknown
-
1951
- 1951-04-17 FR FR1035500D patent/FR1035500A/fr not_active Expired
-
1952
- 1952-03-18 US US277235A patent/US2794072A/en not_active Expired - Lifetime
- 1952-04-10 GB GB9315/52A patent/GB697280A/en not_active Expired
- 1952-04-15 CH CH299885D patent/CH299885A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US2794072A (en) | 1957-05-28 |
| CH299885A (fr) | 1954-06-30 |
| FR1035500A (fr) | 1953-08-25 |
| BE510681A (en:Method) | |
| GB697280A (en) | 1953-09-16 |