IT8121158A0 - Impianto di intercomunicazione elettronico. - Google Patents
Impianto di intercomunicazione elettronico.Info
- Publication number
- IT8121158A0 IT8121158A0 IT8121158A IT2115881A IT8121158A0 IT 8121158 A0 IT8121158 A0 IT 8121158A0 IT 8121158 A IT8121158 A IT 8121158A IT 2115881 A IT2115881 A IT 2115881A IT 8121158 A0 IT8121158 A0 IT 8121158A0
- Authority
- IT
- Italy
- Prior art keywords
- intercommunication system
- electronic intercommunication
- electronic
- intercommunication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
- H04M9/007—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line wherein the key telephone sets are star-connected to a central unit by a limited number of lines
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8008671A FR2481033B1 (fr) | 1980-04-16 | 1980-04-16 | Installation d'intercommunication electronique |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8121158A0 true IT8121158A0 (it) | 1981-04-14 |
IT1137365B IT1137365B (it) | 1986-09-10 |
Family
ID=9241034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT21158/81A IT1137365B (it) | 1980-04-16 | 1981-04-14 | Impianto di intercomunicazione elettronico |
Country Status (13)
Country | Link |
---|---|
JP (1) | JPS579190A (it) |
BE (1) | BE888435A (it) |
BR (1) | BR8102253A (it) |
DE (1) | DE3114977A1 (it) |
DK (1) | DK170081A (it) |
ES (1) | ES501298A0 (it) |
FR (1) | FR2481033B1 (it) |
GB (1) | GB2075306B (it) |
IE (1) | IE51482B1 (it) |
IT (1) | IT1137365B (it) |
MX (1) | MX149212A (it) |
PT (1) | PT72871B (it) |
SE (1) | SE8102382L (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59228828A (ja) * | 1983-06-11 | 1984-12-22 | 萱沢 文男 | 眼体の螢光量測定装置 |
US4638124A (en) * | 1984-09-21 | 1987-01-20 | Itt Corporation | Key telephone system with distributed control |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53119606A (en) * | 1977-03-28 | 1978-10-19 | Toshiba Corp | Double concentrating transmission system of tree-pair line |
US4112261A (en) * | 1977-05-16 | 1978-09-05 | The Anaconda Company | Key telephone system and method |
-
1980
- 1980-04-16 FR FR8008671A patent/FR2481033B1/fr not_active Expired
-
1981
- 1981-04-10 GB GB8111345A patent/GB2075306B/en not_active Expired
- 1981-04-13 BR BR8102253A patent/BR8102253A/pt unknown
- 1981-04-13 ES ES501298A patent/ES501298A0/es active Granted
- 1981-04-14 IE IE839/81A patent/IE51482B1/en unknown
- 1981-04-14 DK DK170081A patent/DK170081A/da not_active IP Right Cessation
- 1981-04-14 IT IT21158/81A patent/IT1137365B/it active
- 1981-04-14 SE SE8102382A patent/SE8102382L/ not_active Application Discontinuation
- 1981-04-14 DE DE19813114977 patent/DE3114977A1/de not_active Ceased
- 1981-04-15 PT PT72871A patent/PT72871B/pt unknown
- 1981-04-15 JP JP5572781A patent/JPS579190A/ja active Pending
- 1981-04-15 MX MX186897A patent/MX149212A/es unknown
- 1981-04-15 BE BE0/204495A patent/BE888435A/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2075306B (en) | 1985-02-13 |
IE810839L (en) | 1981-10-16 |
SE8102382L (sv) | 1981-10-17 |
MX149212A (es) | 1983-09-23 |
PT72871A (fr) | 1981-05-01 |
DE3114977A1 (de) | 1982-03-18 |
DK170081A (da) | 1981-10-17 |
ES8203183A1 (es) | 1982-03-01 |
BR8102253A (pt) | 1981-11-24 |
IE51482B1 (en) | 1987-01-07 |
IT1137365B (it) | 1986-09-10 |
BE888435A (fr) | 1981-07-31 |
PT72871B (fr) | 1982-03-29 |
ES501298A0 (es) | 1982-03-01 |
JPS579190A (en) | 1982-01-18 |
GB2075306A (en) | 1981-11-11 |
FR2481033B1 (fr) | 1987-11-06 |
FR2481033A1 (fr) | 1981-10-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NO810794L (no) | Fluidumregister-system. | |
DE3382546D1 (de) | Kommunikationssystem. | |
NL193517B (nl) | Communicatiestelsel. | |
FI841297A0 (fi) | Strykanordning foer att oeverdraga loepande aemnesbanor. | |
DE3484762D1 (de) | Vermittlungssystem. | |
DE3177233D1 (de) | Datenverarbeitungssystem. | |
FI821270A0 (fi) | System foer att torka vaota poroesa banor | |
NO810100L (no) | Kommunikasjonssystem. | |
FI73541B (fi) | Brandskyddsmantel. | |
FI842821A0 (fi) | System foer golvlaeggning. | |
DE3177206D1 (de) | Divisionssystem. | |
NL182119C (nl) | Luidspreker. | |
NO814475L (no) | Panelingselement. | |
IT8121321A0 (it) | Sitema di accensione elettronico. | |
NO151754C (no) | Systemforskaling. | |
NO811516L (no) | Telekommunikasjonssystem. | |
IT8125025A0 (it) | Connettori. | |
FI844086A0 (fi) | System foer textdisplay. | |
NO822655L (no) | Skruesystem. | |
DE3177135D1 (de) | Modulares datenverarbeitungssystem. | |
IT8121158A0 (it) | Impianto di intercomunicazione elettronico. | |
FI73525B (fi) | Elektronisk maetanordning. | |
NO822783L (no) | Ammunisjons-haandteringssystem. | |
FI823326L (fi) | Idrottsredskap, saerskilt avsett foer att spela fotboll | |
NO147661C (no) | Oesterskurv-system. |