HK30993A - Trunked radio repeater system - Google Patents
Trunked radio repeater systemInfo
- Publication number
- HK30993A HK30993A HK309/93A HK30993A HK30993A HK 30993 A HK30993 A HK 30993A HK 309/93 A HK309/93 A HK 309/93A HK 30993 A HK30993 A HK 30993A HK 30993 A HK30993 A HK 30993A
- Authority
- HK
- Hong Kong
- Prior art keywords
- repeater system
- trunked radio
- radio repeater
- trunked
- repeater
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1614—Details of the supervisory signal using bitmaps
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/056,922 US4905302A (en) | 1987-06-03 | 1987-06-03 | Trunked radio repeater system |
Publications (1)
Publication Number | Publication Date |
---|---|
HK30993A true HK30993A (en) | 1993-04-08 |
Family
ID=22007377
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK308/93A HK30893A (en) | 1987-06-03 | 1993-04-01 | Trunked radio repeater system |
HK309/93A HK30993A (en) | 1987-06-03 | 1993-04-01 | Trunked radio repeater system |
HK307/93A HK30793A (en) | 1987-06-03 | 1993-04-01 | Trunked radio repeater system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK308/93A HK30893A (en) | 1987-06-03 | 1993-04-01 | Trunked radio repeater system |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK307/93A HK30793A (en) | 1987-06-03 | 1993-04-01 | Trunked radio repeater system |
Country Status (8)
Country | Link |
---|---|
US (1) | US4905302A (xx) |
JP (1) | JP3087966B2 (xx) |
KR (1) | KR960004810B1 (xx) |
CA (1) | CA1290401C (xx) |
DK (1) | DK305388A (xx) |
GB (2) | GB2206018B (xx) |
HK (3) | HK30893A (xx) |
SG (1) | SG3893G (xx) |
Families Citing this family (78)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5274837A (en) * | 1987-06-03 | 1993-12-28 | Ericsson Ge Mobile Communications Inc. | Trunked radio repeater system with multigroup calling feature |
US5128930A (en) * | 1987-08-14 | 1992-07-07 | General Electric Company | Processor-to-processor communications protocol for a public service trunking system |
US5020132A (en) * | 1987-08-14 | 1991-05-28 | Ericsson Ge Mobile Communications Inc. | Processor-to-processor communications protocol for a public service trunking system |
US5212724A (en) * | 1987-08-14 | 1993-05-18 | General Electric Company | Processor-to-processor communications protocol for a public service trunking system |
US5206863A (en) * | 1987-08-14 | 1993-04-27 | General Electric Company | Processor-to-processor communications protocol for a public service trunking system |
US5159701A (en) * | 1989-03-31 | 1992-10-27 | E. F. Johnson Company | Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system |
US5086507A (en) * | 1989-05-25 | 1992-02-04 | Ericsson Ge Mobile Communications Inc. | Drop channel pre-alert for trunked radio communication system |
US5131007A (en) * | 1989-06-09 | 1992-07-14 | General Electric Company | Digital voter for multiple site PST R trunking system |
US5131010A (en) * | 1989-10-12 | 1992-07-14 | General Electric Company | Voice guard digital voter for multiple site PST RF trunking system |
US5125101A (en) * | 1990-02-16 | 1992-06-23 | Etrunk Systems, Inc. | Trunking method and apparatus for establishing communication in a two-way mobile radio system |
GB2243974B (en) * | 1990-03-22 | 1994-04-06 | Motorola Israel Ltd | Trunked radio system |
US5101502A (en) * | 1990-04-02 | 1992-03-31 | Motorola, Inc. | Wide area trunked channel busy override |
US5392278A (en) * | 1990-08-28 | 1995-02-21 | Ericsson Ge Mobile Communications Inc. | Distributed multisite system architecture |
EP0474379B1 (en) * | 1990-09-04 | 1995-11-22 | Hewlett-Packard Company | Method and apparatus for analyzing nodes on a computer network |
US5355516A (en) * | 1990-09-28 | 1994-10-11 | Motorola, Inc. | Method for reducing superfluous channel allocation in a cellular radiotelephone communication system |
US5134714A (en) * | 1990-10-12 | 1992-07-28 | Motorola, Inc. | Remote control of priority communications automatic |
US5276911A (en) * | 1990-11-02 | 1994-01-04 | Motorola, Inc. | Contention reducing technique for a radio frequency communication system |
US6088342A (en) * | 1997-05-05 | 2000-07-11 | Nokia Mobile Phones Limited | Dynamic configuration of radio link protocol in a telecommunications system |
US5247703A (en) * | 1991-05-16 | 1993-09-21 | Relm Communications, Inc. | Transceiver with off hook scanning |
US5220565A (en) * | 1991-05-30 | 1993-06-15 | Motorola, Inc. | Selective transmission of encoded voice information representing silence |
FI88986C (fi) * | 1991-10-03 | 1993-07-26 | Telenokia Oy | Foerfarande foer genomfoering av ett gruppsamtal i digitalt radionaet |
JP2822721B2 (ja) * | 1991-10-08 | 1998-11-11 | 日本電気株式会社 | チャネル割当方法 |
US5826198A (en) * | 1992-01-13 | 1998-10-20 | Microcom Systems, Inc. | Transmission of data over a radio frequency channel |
US5517680A (en) * | 1992-01-22 | 1996-05-14 | Ericsson Inc. | Self correction of PST simulcast system timing |
US5459761A (en) * | 1992-06-29 | 1995-10-17 | Motorola, Inc. | Intelligent repeater for trunked communications |
US5513378A (en) * | 1992-06-29 | 1996-04-30 | Ranz; Stephen J. | Maintaining communications after control breaks in a trunked communication system |
US5392449A (en) * | 1992-06-29 | 1995-02-21 | Motorola, Inc. | Resource management by an intelligent repeater |
GB2268366B (en) * | 1992-06-30 | 1996-08-07 | Ericsson Ge Mobile Communicat | Control channel timing detection and self correction for digitally trunked simulcast radio communication system |
US5805645A (en) * | 1992-06-30 | 1998-09-08 | Ericsson Inc. | Control channel synchronization between DBC and Cellular networks |
US5568511A (en) * | 1992-08-26 | 1996-10-22 | Ericsson Ge Mobile Communications Inc. | System and method for radio disconnect and channel access for digitized speech trunked radio systems |
US5410740A (en) * | 1993-03-24 | 1995-04-25 | Telefonaktiebolaget L M Ericsson | Control of a radio communications system base station |
JP3315475B2 (ja) * | 1993-05-28 | 2002-08-19 | キヤノン株式会社 | データ通信装置 |
US5477539A (en) * | 1993-07-23 | 1995-12-19 | Ericsson Inc. | Narrow band simulcast system having low speed data distribution |
US5659881A (en) * | 1994-03-11 | 1997-08-19 | Ericsson Inc. | Distributed method of call arbitration in an RF trunking multisite coordinator architecture |
US5579339A (en) * | 1994-04-04 | 1996-11-26 | Motorola, Inc. | Method for concurrent monitoring of multiple communications |
US5537684A (en) * | 1994-07-29 | 1996-07-16 | Motorola, Inc. | Method for a communication unit to influence communication resource allocation |
FI98690C (fi) * | 1994-10-18 | 1997-07-25 | Nokia Telecommunications Oy | Menetelmä alueryhmäpuhelun muodostamiseksi matkaviestinjärjestelmässä ja matkaviestinjärjestelmä |
US5752198A (en) * | 1994-11-14 | 1998-05-12 | Ericsson Inc. | Single site, split location trunked radio communications system |
US5689801A (en) * | 1994-11-14 | 1997-11-18 | Ericsson Inc. | Power monitoring system for a single site, split location trunked radio communication system |
WO1996031074A1 (en) * | 1995-03-29 | 1996-10-03 | Ericsson Inc. | Console dispatch in an extended multisite radio communications network |
US6044265A (en) * | 1995-06-05 | 2000-03-28 | Bellsouth Corporation | Methods and apparatus for cellular set programming |
US5675629A (en) | 1995-09-08 | 1997-10-07 | At&T | Cordless cellular system base station |
US5911120A (en) | 1995-09-08 | 1999-06-08 | At&T Wireless Services | Wireless communication system having mobile stations establish a communication link through the base station without using a landline or regional cellular network and without a call in progress |
US5842134A (en) * | 1995-09-28 | 1998-11-24 | Ericsson Inc. | Auto-alignment of clear voice and low speed digital data signals in a simulcast system |
US5875211A (en) * | 1995-10-26 | 1999-02-23 | Ericsson Inc. | Multisite radio system with false mobile radio signalling detection |
US5761240A (en) * | 1996-02-06 | 1998-06-02 | Ericsson Inc. | Method and apparatus for determining an optical communications channel without loss of channel messages on a current communications channel |
US5790638A (en) * | 1996-06-07 | 1998-08-04 | Telefonaktiebolaget L M Ericsson (Publ) | Signaling in call transfer calling operations to control the initiation of secondary number telephone service features |
US6081720A (en) * | 1996-06-28 | 2000-06-27 | Hughes Electronics Corporation | Method and apparatus for allocating shared communication channels |
US5857144A (en) * | 1996-08-09 | 1999-01-05 | Ericsson, Inc. | In-band vehicular repeater for trunked radio system |
US6047160A (en) * | 1996-08-29 | 2000-04-04 | Ericsson Inc. | Transportable base station for a trunked radio communication system |
US6169880B1 (en) | 1996-10-16 | 2001-01-02 | Ericsson Inc. | Method and system of load sharing and prioritization of radio repeaters |
US5884180A (en) * | 1996-10-30 | 1999-03-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Method of providing a delayed connection announcement to a mobile subscriber within a radio telecommunication system |
US6519472B1 (en) | 1997-03-12 | 2003-02-11 | Terence Brennan | Trunked radio monitoring system |
US5956648A (en) * | 1997-03-12 | 1999-09-21 | G/Tracker Technologies Llc | Trunked radio monitoring system |
US6529486B1 (en) | 1997-04-11 | 2003-03-04 | Transcrypt International/E.F. Johnson Company | Trunked radio repeater communication system |
US6684080B1 (en) | 1997-05-28 | 2004-01-27 | Transcrypt International/E. F. Johnson Company | Trunked radio repeater communication system including home channel aliasing and call grouping |
US6374115B1 (en) | 1997-05-28 | 2002-04-16 | Transcrypt International/E.F. Johnson | Method and apparatus for trunked radio repeater communications with backwards compatibility |
US6333937B1 (en) * | 1998-03-05 | 2001-12-25 | At&T Wireless Services, Inc. | Access retry method for shared channel wireless communications links |
US6507737B1 (en) * | 1998-09-30 | 2003-01-14 | Lucent Technologies Inc. | Method for automatically monitoring continuity and integrity of communication trunks |
JP2000134668A (ja) * | 1998-10-27 | 2000-05-12 | Nec Corp | 移動通信システムにおける通信状態改善方法および移動通信システム |
KR100429529B1 (ko) * | 1999-10-02 | 2004-05-03 | 삼성전자주식회사 | 부호분할다중접속 통신시스템의 제어채널신호를단속적으로 송수신하는 장치 및 방법 |
GB2383925A (en) * | 2002-01-04 | 2003-07-09 | Ubinetics Ltd | Pilot signal detection using varying window sizes |
WO2003061302A2 (en) * | 2002-01-11 | 2003-07-24 | Hubbell Incorporated | Scanning tone adapter for remote radio dispatch communication |
CN1315291C (zh) * | 2002-03-18 | 2007-05-09 | 上海自动化仪表股份有限公司 | 现场总线中继器 |
US7546135B2 (en) * | 2002-04-08 | 2009-06-09 | M/A-Com Private Radio Systems, Inc. | Extended addressing for a digital trunked radio system |
US7203318B2 (en) * | 2002-06-17 | 2007-04-10 | M/A-Com Private Radio Systems, Inc. | Secure transmission system for a digital trunked radio system |
US7599496B2 (en) * | 2002-08-27 | 2009-10-06 | Pine Valley Investments, Inc. | Secure encryption key distribution |
US7917748B2 (en) * | 2002-10-25 | 2011-03-29 | Pine Valley Investments, Inc. | Secure group secret distribution |
US7353036B2 (en) * | 2004-05-10 | 2008-04-01 | Motorola, Inc. | Push-to-talk reverse channel establishment |
US7508840B2 (en) * | 2004-05-28 | 2009-03-24 | Bae Systems Information And Electronic Systems Integration Inc. | Mobile temporary incident area network for local communications interoperability |
US8238287B1 (en) | 2004-10-06 | 2012-08-07 | Marvell International Ltd. | Method and apparatus for providing quality of service (QoS) in a wireless local area network |
US8131209B1 (en) | 2004-10-08 | 2012-03-06 | Marvell International Ltd. | Repeater configuration and management |
US7962166B1 (en) * | 2005-08-30 | 2011-06-14 | Motorola Solutions, Inc. | Method for indicating a band plan for a trunked radio communications system |
US7715787B2 (en) * | 2005-09-28 | 2010-05-11 | Lg Electronics Inc. | Method of cooperatively relaying data in cellular networks for a broadcast multicast services |
US9711868B2 (en) | 2009-01-30 | 2017-07-18 | Karl Frederick Scheucher | In-building-communication apparatus and method |
US8472881B2 (en) | 2009-03-31 | 2013-06-25 | Karl Frederick Scheucher | Communication system apparatus and method |
US8682249B2 (en) | 2010-08-11 | 2014-03-25 | International Business Machines Corporation | Input device with switchable frequency channel for switchable use between computer systems |
CN103733653B (zh) * | 2012-05-25 | 2017-12-05 | 华为技术有限公司 | 位置信息采集控制方法和终端 |
Family Cites Families (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE629287A (xx) * | 1962-03-22 | |||
US3458664A (en) * | 1965-10-14 | 1969-07-29 | Motorola Inc | Control unit for mobile radio telephone system |
US3571519A (en) * | 1968-10-31 | 1971-03-16 | Motorola Inc | Synchronous supervisory unit for mobile telephone system |
US3696210A (en) * | 1970-08-06 | 1972-10-03 | Motorola Inc | Data transferring system utilizing a monitor channel and logic circuitry to assure secure data communication |
US3801956A (en) * | 1971-04-19 | 1974-04-02 | Motorola Inc | Digital sequence detector using multiple samples during each digit time period |
US3898390A (en) * | 1973-05-15 | 1975-08-05 | Martin Marietta Corp | Multiple zone communications system and method |
US3906166A (en) * | 1973-10-17 | 1975-09-16 | Motorola Inc | Radio telephone system |
US3936616A (en) * | 1974-09-23 | 1976-02-03 | Motorola, Inc. | "Wild" mobile disable circuit |
US3970801A (en) * | 1974-12-03 | 1976-07-20 | Motorola, Inc. | Dialing apparatus for a portable radio telephone |
US4001693A (en) * | 1975-05-12 | 1977-01-04 | General Electric Company | Apparatus for establishing communication between a first radio transmitter and receiver and a second radio transmitter and receiver |
US4027243A (en) * | 1975-05-12 | 1977-05-31 | General Electric Company | Message generator for a controlled radio transmitter and receiver |
US4022973A (en) * | 1975-05-12 | 1977-05-10 | General Electric Company | Apparatus for indicating synchronization and out-of-synchronization conditions |
US4029901A (en) * | 1975-11-13 | 1977-06-14 | Motorola, Inc. | Control center for a communications system with interchannel patching capabilities |
US4012597A (en) * | 1975-11-24 | 1977-03-15 | Motorola, Inc. | Transmission trunk multichannel dispatch system with priority queuing |
US4010327A (en) * | 1976-05-11 | 1977-03-01 | Motorola, Inc. | Communication system interface circuit |
US4131849A (en) * | 1976-10-21 | 1978-12-26 | Motorola, Inc. | Two-way mobile radio voice/data shared communications system |
US4128740A (en) * | 1977-02-14 | 1978-12-05 | Motorola, Inc. | Antenna array for a cellular RF communications system |
US4161718A (en) * | 1977-06-20 | 1979-07-17 | Motorola Israel Ltd. | Supervisory control system |
US4184118A (en) * | 1977-10-03 | 1980-01-15 | Motorola, Inc. | Base station feedback reporting system |
US4231114A (en) * | 1978-02-27 | 1980-10-28 | Motorola, Inc. | Synchronizing means for a two-way communication system |
JPS54158102A (en) * | 1978-06-05 | 1979-12-13 | Hitachi Denshi Ltd | Inter-call system |
US4409687A (en) * | 1978-10-30 | 1983-10-11 | General Electric Company | Arrangement and method for establishing radio communication in a system |
US4360927A (en) * | 1979-03-12 | 1982-11-23 | General Electric Company | Repeater trunking system |
JPS5823776B2 (ja) * | 1979-05-04 | 1983-05-17 | 日立電子株式会社 | 無線通話方式 |
US4267593A (en) * | 1979-06-15 | 1981-05-12 | Wescom Switching, Inc. | Method and means for digital conferencing |
US4400585A (en) * | 1979-11-30 | 1983-08-23 | Motorola, Inc. | Method and apparatus for automatically attempting to seize a radio channel in a multichannel communication system |
US4312070A (en) * | 1979-12-07 | 1982-01-19 | Motorola, Inc. | Digital encoder-decoder |
US4369443A (en) * | 1979-12-26 | 1983-01-18 | Meta Systems, Inc. | Message communication system with message storage |
US4322576A (en) * | 1979-12-28 | 1982-03-30 | Racal-Milgo, Inc. | Message format for secure communication over data links |
JPS5925530B2 (ja) * | 1980-01-21 | 1984-06-19 | 日本電気株式会社 | 回線接続制御方式 |
US4309772A (en) * | 1980-01-24 | 1982-01-05 | Motorola, Inc. | Soft quantizer for FM radio binary digital signaling |
US4312074A (en) * | 1980-02-07 | 1982-01-19 | Motorola, Inc. | Method and apparatus for detecting a data signal including repeated data words |
JPS56126339A (en) * | 1980-03-10 | 1981-10-03 | Nec Corp | Mobile communication system |
US4347625A (en) * | 1980-06-16 | 1982-08-31 | General Electric Company | Arrangement for cellular operation of a repeater trunking system |
US4339823A (en) * | 1980-08-15 | 1982-07-13 | Motorola, Inc. | Phase corrected clock signal recovery circuit |
US4382298A (en) * | 1981-03-27 | 1983-05-03 | General Electric Company | Binary digit or bit restoration circuit |
US4430755A (en) * | 1981-05-14 | 1984-02-07 | Motorola, Inc. | Portable radio telephone |
US4434323A (en) * | 1981-06-29 | 1984-02-28 | Motorola, Inc. | Scrambler key code synchronizer |
US4418425A (en) * | 1981-08-31 | 1983-11-29 | Ibm Corporation | Encryption using destination addresses in a TDMA satellite communications network |
US4430742A (en) * | 1981-11-20 | 1984-02-07 | Motorola, Inc. | Data muting method and apparatus for radio communications systems |
US4450573A (en) * | 1981-12-07 | 1984-05-22 | Motorola Inc. | Bit data operated squelch |
US4433256A (en) * | 1982-07-06 | 1984-02-21 | Motorola, Inc. | Limiter with dynamic hysteresis |
US4485486A (en) * | 1982-08-03 | 1984-11-27 | Motorola, Inc. | Method and apparatus for assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radio telephones in a cellular radiotelephone communications system |
US4534061A (en) * | 1983-09-06 | 1985-08-06 | General Electric Company | Deterministic multi-access method for a decentralized mobile radio system |
US4578815A (en) * | 1983-12-07 | 1986-03-25 | Motorola, Inc. | Wide area coverage radio communication system and method |
JPS60134531A (ja) * | 1983-12-22 | 1985-07-17 | Toshiba Corp | 無線機 |
JPS60210035A (ja) * | 1984-04-02 | 1985-10-22 | Japan Radio Co Ltd | 一斉放送方式 |
JPS619036A (ja) * | 1984-06-23 | 1986-01-16 | Trio Kenwood Corp | アマチユア無線用通信機 |
US4658435A (en) * | 1984-09-17 | 1987-04-14 | General Electric Company | Radio trunking system with transceivers and repeaters using special channel acquisition protocol |
US4757536A (en) * | 1984-10-17 | 1988-07-12 | General Electric Company | Method and apparatus for transceiving cryptographically encoded digital data |
US4663765A (en) * | 1985-02-01 | 1987-05-05 | General Electric Company | Data muting method and apparatus for audo-digital communications systems |
JPS61205039A (ja) * | 1985-03-08 | 1986-09-11 | Oki Electric Ind Co Ltd | ブロツク同期通信方式 |
US4649567A (en) * | 1985-04-22 | 1987-03-10 | General Electric Company | Dispatch overdialing for inter-group and other added calling/called access to communications channels in a trunked radio communications system |
US4698805A (en) * | 1985-09-13 | 1987-10-06 | Motorola, Inc. | Console interface for a trunked radio system |
US4716407A (en) * | 1985-10-07 | 1987-12-29 | Motorola, Inc. | Trunked communication system true priority channel scan |
JPH024531Y2 (xx) * | 1985-10-30 | 1990-02-02 | ||
CA1250900A (en) * | 1986-11-18 | 1989-03-07 | Northern Telecom Limited | Private cellular system |
US4723264A (en) * | 1987-06-19 | 1988-02-02 | Motorola, Inc. | Signalling method for establishing trunked communication |
US4811420A (en) * | 1987-07-08 | 1989-03-07 | International Mobile Machines Corporation | Initialization of communication channel between a subsciber station and a base station in a subscriber communication system |
JPH102836A (ja) * | 1996-06-13 | 1998-01-06 | Canon Inc | 光学的異方性測定装置 |
-
1987
- 1987-06-03 US US07/056,922 patent/US4905302A/en not_active Expired - Lifetime
-
1988
- 1988-01-30 KR KR1019880000830A patent/KR960004810B1/ko not_active IP Right Cessation
- 1988-05-12 CA CA000566664A patent/CA1290401C/en not_active Expired - Lifetime
- 1988-06-02 JP JP13456088A patent/JP3087966B2/ja not_active Expired - Fee Related
- 1988-06-03 DK DK305388A patent/DK305388A/da not_active Application Discontinuation
- 1988-06-03 GB GB8813168A patent/GB2206018B/en not_active Expired - Lifetime
-
1991
- 1991-05-24 GB GB9111268A patent/GB2244889B/en not_active Expired - Lifetime
-
1993
- 1993-01-08 SG SG38/93A patent/SG3893G/en unknown
- 1993-04-01 HK HK308/93A patent/HK30893A/xx not_active IP Right Cessation
- 1993-04-01 HK HK309/93A patent/HK30993A/xx not_active IP Right Cessation
- 1993-04-01 HK HK307/93A patent/HK30793A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2244889A (en) | 1991-12-11 |
GB2206018B (en) | 1992-06-03 |
DK305388A (da) | 1989-03-17 |
DK305388D0 (da) | 1988-06-03 |
JPS644133A (en) | 1989-01-09 |
HK30893A (en) | 1993-04-08 |
GB2244889B (en) | 1992-06-03 |
GB9111268D0 (en) | 1991-07-17 |
US4905302A (en) | 1990-02-27 |
KR960004810B1 (ko) | 1996-04-13 |
GB8813168D0 (en) | 1988-07-06 |
SG3893G (en) | 1993-03-12 |
CA1290401C (en) | 1991-10-08 |
JP3087966B2 (ja) | 2000-09-18 |
GB2206018A (en) | 1988-12-21 |
HK30793A (en) | 1993-04-08 |
KR890001308A (ko) | 1989-03-20 |
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