BE515787A - - Google Patents
Info
- Publication number
- BE515787A BE515787A BE515787DA BE515787A BE 515787 A BE515787 A BE 515787A BE 515787D A BE515787D A BE 515787DA BE 515787 A BE515787 A BE 515787A
- Authority
- BE
- Belgium
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
- H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
- H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
-
- 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
- H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Push-Button Switches (AREA)
- Structure Of Telephone Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL315752X | 1951-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE515787A true BE515787A (pl) |
Family
ID=19783801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE515787D BE515787A (pl) | 1951-11-26 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2758158A (pl) |
| BE (1) | BE515787A (pl) |
| CH (1) | CH315752A (pl) |
| DE (1) | DE923671C (pl) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL184891B (nl) * | 1953-03-04 | Degussa | Werkwijze voor het bereiden van zeoliet a. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2082911A (en) * | 1935-11-08 | 1937-06-08 | American Telephone & Telegraph | Switch |
| US2358095A (en) * | 1943-03-09 | 1944-09-12 | Bell Telephone Labor Inc | Switching device |
| US2479678A (en) * | 1945-11-21 | 1949-08-23 | Automatic Elect Lab | Crossbar switch having a plurality of selecting magnets with a common control and a common release magnet |
| BE493326A (pl) * | 1950-01-17 |
-
0
- BE BE515787D patent/BE515787A/xx unknown
-
1952
- 1952-11-18 US US321126A patent/US2758158A/en not_active Expired - Lifetime
- 1952-11-26 CH CH315752D patent/CH315752A/fr unknown
- 1952-11-27 DE DEI6629A patent/DE923671C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE923671C (de) | 1955-02-21 |
| US2758158A (en) | 1956-08-07 |
| CH315752A (fr) | 1956-08-31 |