BE799885R - Perfectionnements aux dispositifs d'intercommunication a rayonnement limite, - Google Patents
Perfectionnements aux dispositifs d'intercommunication a rayonnement limite,Info
- Publication number
- BE799885R BE799885R BE131402A BE131402A BE799885R BE 799885 R BE799885 R BE 799885R BE 131402 A BE131402 A BE 131402A BE 131402 A BE131402 A BE 131402A BE 799885 R BE799885 R BE 799885R
- Authority
- BE
- Belgium
- Prior art keywords
- limited radiation
- intercommunication devices
- intercommunication
- devices
- radiation
- Prior art date
Links
- 230000005855 radiation Effects 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Near-Field Transmission Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7218881A FR2185899B2 (xx) | 1970-12-23 | 1972-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE799885R true BE799885R (fr) | 1973-09-17 |
Family
ID=9099157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE131402A BE799885R (fr) | 1972-05-26 | 1973-05-22 | Perfectionnements aux dispositifs d'intercommunication a rayonnement limite, |
Country Status (11)
Country | Link |
---|---|
US (1) | US3868575A (xx) |
JP (2) | JPS4962005A (xx) |
AT (1) | AT337259B (xx) |
BE (1) | BE799885R (xx) |
CH (1) | CH584435A5 (xx) |
DE (1) | DE2326829C2 (xx) |
ES (1) | ES415137A2 (xx) |
GB (1) | GB1429035A (xx) |
IT (1) | IT1045762B (xx) |
SU (1) | SU589941A3 (xx) |
ZA (1) | ZA733563B (xx) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1432297A (en) * | 1974-04-05 | 1976-04-14 | Standard Telephones Cables Ltd | Selective calling arrangement |
JPS53145505A (en) * | 1977-05-25 | 1978-12-18 | Kensetsusho Doboku Kenkyu Shocho | Traffic information communication system |
FR2478901B1 (fr) * | 1980-03-18 | 1986-02-07 | Jeumont Schneider | Etage de selection du signal alternatif de plus grande amplitude parmi deux signaux de frequences differentes |
JPH0662857B2 (ja) * | 1989-06-13 | 1994-08-17 | 株式会社アサヒコーポレーション | 制振材 |
CA2033763C (en) * | 1990-01-18 | 1994-11-01 | Timothy Burke | Distributed amplifier network management system |
US5404570A (en) * | 1992-11-23 | 1995-04-04 | Telefonaktiebolaget L M Ericsson | Radio coverage in closed environments |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR964305A (xx) * | 1947-04-24 | 1950-08-10 | ||
US3539924A (en) * | 1967-10-12 | 1970-11-10 | Bell Telephone Labor Inc | Zoned mobile radio telephone system |
GB1240588A (en) * | 1968-07-30 | 1971-07-28 | Japan National Railway | Improvements in or relating to communication control systems |
US3760278A (en) * | 1970-12-23 | 1973-09-18 | Thomson Csf | Limited range radiocommunication system |
-
1973
- 1973-05-22 BE BE131402A patent/BE799885R/xx active
- 1973-05-24 AT AT454973A patent/AT337259B/de not_active IP Right Cessation
- 1973-05-24 US US363730A patent/US3868575A/en not_active Expired - Lifetime
- 1973-05-24 ES ES415137A patent/ES415137A2/es not_active Expired
- 1973-05-24 GB GB2500373A patent/GB1429035A/en not_active Expired
- 1973-05-25 DE DE2326829A patent/DE2326829C2/de not_active Expired
- 1973-05-25 SU SU731927812A patent/SU589941A3/ru active
- 1973-05-25 IT IT50231/73A patent/IT1045762B/it active
- 1973-05-25 ZA ZA733563A patent/ZA733563B/xx unknown
- 1973-05-25 CH CH756173A patent/CH584435A5/xx not_active IP Right Cessation
- 1973-05-26 JP JP48058271A patent/JPS4962005A/ja active Pending
-
1980
- 1980-09-20 JP JP13142380A patent/JPS5652943A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5652943A (en) | 1981-05-12 |
SU589941A3 (ru) | 1978-01-25 |
JPS5756259B2 (xx) | 1982-11-29 |
ES415137A2 (es) | 1976-02-16 |
GB1429035A (en) | 1976-03-24 |
ATA454973A (de) | 1976-10-15 |
DE2326829C2 (de) | 1982-07-29 |
US3868575A (en) | 1975-02-25 |
AU481774A (xx) | 1975-01-09 |
ZA733563B (en) | 1974-06-26 |
AT337259B (de) | 1977-06-27 |
DE2326829A1 (de) | 1973-12-06 |
CH584435A5 (xx) | 1977-01-31 |
JPS4962005A (xx) | 1974-06-15 |
IT1045762B (it) | 1980-06-10 |
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