SE7610107L - Anordning vid en telefonapparat - Google Patents
Anordning vid en telefonapparatInfo
- Publication number
- SE7610107L SE7610107L SE7610107A SE7610107A SE7610107L SE 7610107 L SE7610107 L SE 7610107L SE 7610107 A SE7610107 A SE 7610107A SE 7610107 A SE7610107 A SE 7610107A SE 7610107 L SE7610107 L SE 7610107L
- Authority
- SE
- Sweden
- Prior art keywords
- telephone
- telephone device
- Prior art date
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
- H04M3/436—Arrangements for screening incoming calls, i.e. evaluating the characteristics of a call before deciding whether to answer it
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Exchange Systems With Centralized Control (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/616,284 US3997735A (en) | 1975-09-24 | 1975-09-24 | Telephone station make-busy circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
SE7610107L true SE7610107L (sv) | 1977-03-25 |
Family
ID=24468782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7610107A SE7610107L (sv) | 1975-09-24 | 1976-09-13 | Anordning vid en telefonapparat |
Country Status (5)
Country | Link |
---|---|
US (1) | US3997735A (sv) |
JP (1) | JPS5240004A (sv) |
CA (1) | CA1065071A (sv) |
DE (1) | DE2642171A1 (sv) |
SE (1) | SE7610107L (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1577029A (en) * | 1977-05-19 | 1980-10-15 | Griling Ltd | Vehicle load sensing assemblies |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3673339A (en) * | 1970-07-22 | 1972-06-27 | Bell Telephone Labor Inc | Artificial line busy circuit |
BE791694A (fr) * | 1971-12-30 | 1973-03-16 | Kilby Jack St Cl | Systeme pour mettre hors d'action des appels telephoniques incidents |
-
1975
- 1975-09-24 US US05/616,284 patent/US3997735A/en not_active Expired - Lifetime
-
1976
- 1976-08-20 CA CA259,585A patent/CA1065071A/en not_active Expired
- 1976-09-13 SE SE7610107A patent/SE7610107L/sv unknown
- 1976-09-20 DE DE19762642171 patent/DE2642171A1/de not_active Ceased
- 1976-09-22 JP JP51113189A patent/JPS5240004A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US3997735A (en) | 1976-12-14 |
DE2642171A1 (de) | 1977-04-07 |
CA1065071A (en) | 1979-10-23 |
JPS5240004A (en) | 1977-03-28 |
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