IT9019186A0 - Linea di telecomunicazione a fibre ottiche con canali separati di servizio - Google Patents
Linea di telecomunicazione a fibre ottiche con canali separati di servizioInfo
- Publication number
- IT9019186A0 IT9019186A0 IT19186A IT1918690A IT9019186A0 IT 9019186 A0 IT9019186 A0 IT 9019186A0 IT 19186 A IT19186 A IT 19186A IT 1918690 A IT1918690 A IT 1918690A IT 9019186 A0 IT9019186 A0 IT 9019186A0
- Authority
- IT
- Italy
- Prior art keywords
- fiber optic
- telecommunication line
- service channels
- separate service
- optic telecommunication
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0777—Monitoring line amplifier or line repeater equipment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0226—Fixed carrier allocation, e.g. according to service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
- H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
- H04J14/0246—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU using one wavelength per ONU
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
- H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
- H04J14/025—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/028—WDM bus architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/07—Monitoring an optical transmission system using a supervisory signal
- H04B2210/078—Monitoring an optical transmission system using a supervisory signal using a separate wavelength
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
- Small-Scale Networks (AREA)
Priority Applications (25)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT01918690A IT1238032B (it) | 1990-01-30 | 1990-01-30 | Linea di telecomunicazione a fibre ottiche con canali separati di servizio |
AU68661/91A AU647063B2 (en) | 1990-01-30 | 1991-01-04 | Optical fibre telecommunications line with separate service channels |
EP91200067A EP0440276B2 (en) | 1990-01-30 | 1991-01-15 | Optical fibre telecommunications line with separate service channels |
AT91200067T ATE134808T1 (de) | 1990-01-30 | 1991-01-15 | Lichtwellenleiternachrichtenübertragungsleitung mit getrennten dienstkanälen |
DK91200067.6T DK0440276T3 (da) | 1990-01-30 | 1991-01-15 | Optisk fiberkommunikationslinie med separate servicekanaler |
ES91200067T ES2085951T3 (es) | 1990-01-30 | 1991-01-15 | Linea de telecomunicacion de fibra optica con canales de servicio separados. |
DE69117312T DE69117312T3 (de) | 1990-01-30 | 1991-01-15 | Lichtwellenleiternachrichtenübertragungsleitung mit getrennten Dienstkanälen |
MYPI91000080A MY104614A (en) | 1990-01-30 | 1991-01-18 | Optical fibre telecommunications line with separate service channels. |
CS91147A CZ282145B6 (cs) | 1990-01-30 | 1991-01-23 | Telekomunikační linka s optickým vláknem a s oddělenými servisními kanály |
NZ236897A NZ236897A (en) | 1990-01-30 | 1991-01-24 | Optical fibre transmission: service signal injection and extraction |
CA002034915A CA2034915C (en) | 1990-01-30 | 1991-01-24 | Optical fiber telecommunication line with separate, optically transmitted service channels |
AR91318926A AR243704A1 (es) | 1990-01-30 | 1991-01-28 | Linea de comunicaciones de fibra optica con canales de servicio separados. |
IE29791A IE74686B1 (en) | 1990-01-30 | 1991-01-29 | Optical fibre telecommunications line with separate service channels |
NO910329A NO303256B1 (no) | 1990-01-30 | 1991-01-29 | Fiberoptisk telekommunikasjonsledning med separate tjenestekanaler |
FI910420A FI102650B (fi) | 1990-01-30 | 1991-01-29 | Telejohto optisin kuiduin ja erillisin huoltokanavin |
PT96594A PT96594B (pt) | 1990-01-30 | 1991-01-29 | Linha de telecomunicacoes de fibra optica com canais de servico independentes |
HU91315A HU208599B (en) | 1990-01-30 | 1991-01-29 | Optical signal transmission line of light conductor |
PL91288879A PL167324B1 (en) | 1990-01-30 | 1991-01-29 | Optical wave-guide telecommunication line |
KR1019910001470A KR100216858B1 (ko) | 1990-01-30 | 1991-01-29 | 분리 서비스 채널을 사용하는 광섬유 원격통신 회선 |
US07647141 US5113459C1 (en) | 1990-01-30 | 1991-01-29 | Optical fiber telecommunication line with separate optically transmitted service channels |
BR919100049A BR9100049A (pt) | 1990-01-30 | 1991-01-30 | Linha de telecomunicacao por fibras oticas com canais separados de servico |
CN91100536A CN1025646C (zh) | 1990-01-30 | 1991-01-30 | 具有单独服务信道的光纤电信线路 |
JP00994791A JP3218047B2 (ja) | 1990-01-30 | 1991-01-30 | 光伝送システム |
SU914894352A RU2081515C1 (ru) | 1990-01-30 | 1991-01-30 | Оптическая волоконная линия связи |
HK201396A HK201396A (en) | 1990-01-30 | 1996-11-07 | Optical fibre telecommunications line with separate service channels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT01918690A IT1238032B (it) | 1990-01-30 | 1990-01-30 | Linea di telecomunicazione a fibre ottiche con canali separati di servizio |
Publications (3)
Publication Number | Publication Date |
---|---|
IT9019186A0 true IT9019186A0 (it) | 1990-01-30 |
IT9019186A1 IT9019186A1 (it) | 1991-07-30 |
IT1238032B IT1238032B (it) | 1993-06-23 |
Family
ID=11155629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT01918690A IT1238032B (it) | 1990-01-30 | 1990-01-30 | Linea di telecomunicazione a fibre ottiche con canali separati di servizio |
Country Status (25)
Country | Link |
---|---|
US (1) | US5113459C1 (it) |
EP (1) | EP0440276B2 (it) |
JP (1) | JP3218047B2 (it) |
KR (1) | KR100216858B1 (it) |
CN (1) | CN1025646C (it) |
AR (1) | AR243704A1 (it) |
AT (1) | ATE134808T1 (it) |
AU (1) | AU647063B2 (it) |
BR (1) | BR9100049A (it) |
CA (1) | CA2034915C (it) |
CZ (1) | CZ282145B6 (it) |
DE (1) | DE69117312T3 (it) |
DK (1) | DK0440276T3 (it) |
ES (1) | ES2085951T3 (it) |
FI (1) | FI102650B (it) |
HK (1) | HK201396A (it) |
HU (1) | HU208599B (it) |
IE (1) | IE74686B1 (it) |
IT (1) | IT1238032B (it) |
MY (1) | MY104614A (it) |
NO (1) | NO303256B1 (it) |
NZ (1) | NZ236897A (it) |
PL (1) | PL167324B1 (it) |
PT (1) | PT96594B (it) |
RU (1) | RU2081515C1 (it) |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5229876A (en) * | 1990-03-26 | 1993-07-20 | At&T Bell Laboratories | Telemetry for optical fiber amplifier repeater |
DE4010712A1 (de) * | 1990-04-03 | 1991-10-10 | Standard Elektrik Lorenz Ag | Optisches nachrichtenuebertragungssystem mit einem faseroptischen verstaerker |
DE4019225A1 (de) * | 1990-06-15 | 1991-12-19 | Standard Elektrik Lorenz Ag | Optisches schaltelement |
DE4036327A1 (de) * | 1990-11-15 | 1992-05-21 | Standard Elektrik Lorenz Ag | Optisches nachrichtenuebertragungssystem mit einem faseroptischen verstaerker |
IT1247844B (it) * | 1991-03-29 | 1995-01-02 | Pirelli Cavi S P A Dir Proprie | Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l'emissione luminosa in tutta la linea in presenza di un'interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita' |
JP3110805B2 (ja) * | 1991-07-01 | 2000-11-20 | 富士通株式会社 | 光中継システム |
FR2680928B1 (fr) * | 1991-08-30 | 1994-11-10 | France Telecom | Systeme de communication optique utilisant des amplificateurs optiques a semiconducteur a onde progressive. |
JPH05292040A (ja) | 1992-04-08 | 1993-11-05 | Hitachi Ltd | 光伝送システムの構築方法 |
US5555477A (en) * | 1992-04-08 | 1996-09-10 | Hitachi, Ltd. | Optical transmission system constructing method and system |
FR2696302A1 (fr) * | 1992-09-28 | 1994-04-01 | Cit Alcatel | Liaison à fibres optiques et amplificateur pour cette liaison. |
GB9305977D0 (en) * | 1993-03-23 | 1993-05-12 | Northern Telecom Ltd | Transmission system incorporating optical amplifiers |
ATE178173T1 (de) * | 1993-09-30 | 1999-04-15 | Ant Nachrichtentech | Optisches nachrichtenübertragungsverfahren und zwischenverstärker hierfür |
DE4333367A1 (de) * | 1993-09-30 | 1995-04-06 | Ant Nachrichtentech | Sender und Empfänger für ein optisches Nachrichtenübertragungssystem |
US5394265A (en) * | 1993-10-25 | 1995-02-28 | At&T Corp. | In-line two-stage erbium doped fiber amplifier system with in-band telemetry channel |
IT1274368B (it) * | 1995-03-28 | 1997-07-17 | Pirelli Cavi Spa | Metodo di telecomunicazione ottica con trasmissione e ricezione di canale di servizio |
US5532864A (en) * | 1995-06-01 | 1996-07-02 | Ciena Corporation | Optical monitoring channel for wavelength division multiplexed optical communication system |
JPH09153862A (ja) * | 1995-11-30 | 1997-06-10 | Kokusai Denshin Denwa Co Ltd <Kdd> | 光増幅中継伝送システムの監視方法 |
JPH09321739A (ja) * | 1996-05-29 | 1997-12-12 | Nec Corp | 光アンプ中継伝送システム |
US5764405A (en) * | 1996-10-10 | 1998-06-09 | Tyco Submarine Systems Ltd. | Lossless optical transmission system architecture with non-failing optical amplifiers |
DE19651236A1 (de) * | 1996-12-10 | 1998-06-18 | Bosch Gmbh Robert | Einrichtung zum Ein- und Auskoppeln optischer Signale zweier Übertragungskanäle |
DE19712759A1 (de) * | 1997-03-27 | 1998-10-01 | Bosch Gmbh Robert | Bidirektionale optische Übertragungseinrichtung und Verfahren zur Überprüfung der Übertragung in einer bidirektionalen optischen Übertragungseinrichtung |
DE69840123D1 (de) * | 1997-05-27 | 2008-11-27 | Ciena Corp | System zum spannen-management für ein wellenlängemultiplex- netzwerk |
EP1439653A3 (en) * | 1997-05-27 | 2007-09-19 | Ciena Corporation | Span management system for wavelength division multiplexed network |
SE9702685D0 (sv) | 1997-07-11 | 1997-07-11 | Ericsson Telefon Ab L M | Self-healing ring network and a method for fault detection and rectifying |
SE9702688D0 (sv) | 1997-07-11 | 1997-07-11 | Ericsson Telefon Ab L M | A method and system for interconnicting ring networks |
US6111675A (en) * | 1997-08-27 | 2000-08-29 | Mciworldcom, Inc. | System and method for bi-directional transmission of telemetry service signals using a single fiber |
DE19807069A1 (de) | 1998-02-20 | 1999-08-26 | Bosch Gmbh Robert | Verfahren zur Übertragung von optischen Nutzsignalen und optisches Leitungsnetzwerk |
US6049413A (en) * | 1998-05-22 | 2000-04-11 | Ciena Corporation | Optical amplifier having first and second stages and an attenuator controlled based on the gains of the first and second stages |
US6388782B1 (en) | 1998-06-01 | 2002-05-14 | Sarnoff Corporation | Multi-wavelength dense wavelength division multiplexed optical switching systems |
US6014237A (en) * | 1998-06-01 | 2000-01-11 | Sarnoff Corporation | Multiwavelength mode-locked dense wavelength division multiplexed optical communication systems |
US6411407B1 (en) | 1998-09-17 | 2002-06-25 | Alcatel | Method for providing a bidirectional optical supervisory channel |
US6192058B1 (en) | 1998-09-18 | 2001-02-20 | Sarnoff Corporation | Multiwavelength actively mode-locked external cavity semiconductor laser |
US6359729B1 (en) | 1998-11-17 | 2002-03-19 | Corvis Corporation | Optical communication system and component control architectures and methods |
JP3605629B2 (ja) * | 1998-12-15 | 2004-12-22 | 富士通株式会社 | 光源の冗長切替方法及び該方法による波長多重伝送装置 |
US6236499B1 (en) | 1999-04-15 | 2001-05-22 | Nortel Networks Limited | Highly scalable modular optical amplifier based subsystem |
US6757098B2 (en) * | 1999-04-15 | 2004-06-29 | Nortel Network Limited | Highly scalable modular optical amplifier based subsystem |
DE19917751C2 (de) * | 1999-04-20 | 2001-05-31 | Nokia Networks Oy | Verfahren und Überwachungsvorrichtung zur Überwachung der Qualität der Datenübertragung über analoge Leitungen |
US6400863B1 (en) * | 1999-06-11 | 2002-06-04 | General Instrument | Monitoring system for a hybrid fiber cable network |
GB9925402D0 (en) * | 1999-10-28 | 1999-12-29 | Marconi Comm Ltd | Method of communicating supervisory traffic and communication traffic in a communication system including add-drop filters |
US7286756B1 (en) | 2001-05-15 | 2007-10-23 | Cisco Technology, Inc. | DWDM system with IP telephony provisioning at remote locations |
US20030063345A1 (en) * | 2001-10-01 | 2003-04-03 | Dan Fossum | Wayside user communications over optical supervisory channel |
US7394981B2 (en) * | 2002-03-28 | 2008-07-01 | Manifold Robert H | Optical communication management systems |
US7489867B1 (en) | 2002-05-06 | 2009-02-10 | Cisco Technology, Inc. | VoIP service over an ethernet network carried by a DWDM optical supervisory channel |
US20040047295A1 (en) * | 2002-08-20 | 2004-03-11 | Morreale Jay P. | Method and apparatus for providing a common optical line monitoring and service channel over an WDM optical transmission system |
US7171122B1 (en) | 2002-09-19 | 2007-01-30 | Wellhead Patent, Llc | Fiberoptic data telecommunication system architecture |
JP4707399B2 (ja) * | 2004-07-30 | 2011-06-22 | 富士通株式会社 | 光分岐挿入装置 |
JP4602739B2 (ja) * | 2004-11-01 | 2010-12-22 | 昭和電線ケーブルシステム株式会社 | 波長多重伝送システム |
JP4840027B2 (ja) | 2006-08-28 | 2011-12-21 | 日本電気株式会社 | 局側光網終端装置および光通信システム |
JP4973491B2 (ja) * | 2007-12-26 | 2012-07-11 | 富士通株式会社 | 光伝送装置および光通信システム |
WO2012141868A1 (en) * | 2011-04-15 | 2012-10-18 | Faro Technologies, Inc. | Enhanced position detector in laser tracker |
JP2015174208A (ja) * | 2014-03-18 | 2015-10-05 | セイコーエプソン株式会社 | ロボット |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276656A (en) * | 1979-03-19 | 1981-06-30 | Honeywell Information Systems Inc. | Apparatus and method for replacement of a parallel, computer-to-peripheral wire link with a serial optical link |
DE3027755A1 (de) * | 1980-07-22 | 1982-02-11 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur ueberwachung von zwischenregeneratoren |
FR2546012B1 (fr) * | 1983-05-11 | 1986-05-16 | Thomson Csf | Procede de transmission bidirectionnelle de donnees par fibre optique sur un bus serie et dispositif terminal connecte a ce bus pour la mise en oeuvre de ce procede |
US4781427A (en) * | 1985-09-19 | 1988-11-01 | The Mitre Corporation | Active star centered fiber optic local area network |
DE3632047C2 (de) * | 1986-09-20 | 1998-05-14 | Sel Alcatel Ag | Optisches Nachrichtenübertragungssystem für Schmalband- und Breitband-Nachrichtensignale |
EP0305995B1 (en) * | 1987-09-01 | 1993-11-03 | Nec Corporation | An optical amplifying repeater |
US5054896A (en) * | 1988-12-19 | 1991-10-08 | Infinity Photo-Optical Corporation | Continuously focusable microscope incorporating an afocal variator optical system |
GB2218534B (en) * | 1988-05-14 | 1992-03-25 | Stc Plc | Active optical fibre star coupler |
DE3819445A1 (de) * | 1988-06-08 | 1989-12-14 | Standard Elektrik Lorenz Ag | Optisches nachrichtenuebertragungssystem, insbesondere im teilnehmeranschlussbereich |
NL8801590A (nl) * | 1988-06-22 | 1990-01-16 | Nederland Ptt | Optisch netwerk waarbij transmissie, samenvoegen resp. scheiden van informatie- en stuursignalen en routering in het optische domein plaatsvinden. |
US4878726A (en) * | 1988-11-10 | 1989-11-07 | American Telephone And Telegraph Company | Optical transmission system |
US4911515A (en) * | 1988-12-22 | 1990-03-27 | Northern Telecom Limited | Optical fiber communications system with optical fiber monitoring |
DE3907497A1 (de) * | 1989-03-08 | 1990-09-13 | Standard Elektrik Lorenz Ag | Optisches nachrichtenuebertragungssystem fuer den teilnehmeranschlussbereich |
DE3913300A1 (de) * | 1989-04-22 | 1990-10-25 | Standard Elektrik Lorenz Ag | Optisches nachrichtenuebertragungssystem fuer den teilnehmeranschlussbereich |
DE3928116A1 (de) * | 1989-08-25 | 1991-02-28 | Ant Nachrichtentech | Datennetz mit lichtwellenleitern |
-
1990
- 1990-01-30 IT IT01918690A patent/IT1238032B/it active IP Right Grant
-
1991
- 1991-01-04 AU AU68661/91A patent/AU647063B2/en not_active Expired
- 1991-01-15 ES ES91200067T patent/ES2085951T3/es not_active Expired - Lifetime
- 1991-01-15 DE DE69117312T patent/DE69117312T3/de not_active Expired - Lifetime
- 1991-01-15 EP EP91200067A patent/EP0440276B2/en not_active Expired - Lifetime
- 1991-01-15 AT AT91200067T patent/ATE134808T1/de not_active IP Right Cessation
- 1991-01-15 DK DK91200067.6T patent/DK0440276T3/da active
- 1991-01-18 MY MYPI91000080A patent/MY104614A/en unknown
- 1991-01-23 CZ CS91147A patent/CZ282145B6/cs not_active IP Right Cessation
- 1991-01-24 CA CA002034915A patent/CA2034915C/en not_active Expired - Lifetime
- 1991-01-24 NZ NZ236897A patent/NZ236897A/xx unknown
- 1991-01-28 AR AR91318926A patent/AR243704A1/es active
- 1991-01-29 US US07647141 patent/US5113459C1/en not_active Expired - Lifetime
- 1991-01-29 FI FI910420A patent/FI102650B/fi active IP Right Grant
- 1991-01-29 PT PT96594A patent/PT96594B/pt not_active IP Right Cessation
- 1991-01-29 IE IE29791A patent/IE74686B1/en not_active IP Right Cessation
- 1991-01-29 PL PL91288879A patent/PL167324B1/pl unknown
- 1991-01-29 KR KR1019910001470A patent/KR100216858B1/ko not_active IP Right Cessation
- 1991-01-29 HU HU91315A patent/HU208599B/hu not_active IP Right Cessation
- 1991-01-29 NO NO910329A patent/NO303256B1/no not_active IP Right Cessation
- 1991-01-30 BR BR919100049A patent/BR9100049A/pt not_active IP Right Cessation
- 1991-01-30 CN CN91100536A patent/CN1025646C/zh not_active Expired - Fee Related
- 1991-01-30 RU SU914894352A patent/RU2081515C1/ru active
- 1991-01-30 JP JP00994791A patent/JP3218047B2/ja not_active Expired - Lifetime
-
1996
- 1996-11-07 HK HK201396A patent/HK201396A/xx not_active IP Right Cessation
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