MX9102350A - Articulos de seguridad. - Google Patents

Articulos de seguridad.

Info

Publication number
MX9102350A
MX9102350A MX9102350A MX9102350A MX9102350A MX 9102350 A MX9102350 A MX 9102350A MX 9102350 A MX9102350 A MX 9102350A MX 9102350 A MX9102350 A MX 9102350A MX 9102350 A MX9102350 A MX 9102350A
Authority
MX
Mexico
Prior art keywords
pct
security element
date
light
overlap
Prior art date
Application number
MX9102350A
Other languages
English (en)
Inventor
David Edward
Original Assignee
Portals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10686480&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX9102350(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Portals Ltd filed Critical Portals Ltd
Publication of MX9102350A publication Critical patent/MX9102350A/es

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • B42D2033/10—
    • B42D2035/36—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00—Printed matter
    • Y10S283/901—Concealed data

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Facsimile Transmission Control (AREA)
  • Sorption Type Refrigeration Machines (AREA)
MX9102350A 1990-12-04 1991-12-03 Articulos de seguridad. MX9102350A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9026379A GB2250474B (en) 1990-12-04 1990-12-04 Security articles

Publications (1)

Publication Number Publication Date
MX9102350A true MX9102350A (es) 1992-06-01

Family

ID=10686480

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9102350A MX9102350A (es) 1990-12-04 1991-12-03 Articulos de seguridad.

Country Status (20)

Country Link
US (1) US5388862A (es)
EP (1) EP0563109B1 (es)
JP (1) JPH06503128A (es)
KR (1) KR930703511A (es)
CN (1) CN1031386C (es)
AT (1) ATE121150T1 (es)
AU (1) AU651857B2 (es)
BR (1) BR9107204A (es)
CA (1) CA2096649A1 (es)
DE (1) DE69108932T2 (es)
DK (1) DK0563109T3 (es)
ES (1) ES2070625T3 (es)
FI (1) FI932532L (es)
GB (1) GB2250474B (es)
HU (1) HUT67614A (es)
MX (1) MX9102350A (es)
PL (1) PL168881B1 (es)
SI (1) SI9111840A (es)
TW (1) TW206273B (es)
WO (1) WO1992010608A1 (es)

Families Citing this family (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5876068A (en) * 1988-03-04 1999-03-02 Gao Gessellschaft Fur Automation Und Organisation Gmbh Security element in the form of a thread or strip to be embedded in security documents and methods of producing it
ATE100880T1 (de) 1988-03-04 1994-02-15 Gao Ges Automation Org Sicherheitselement in form eines fadens oder bandes zur einbettung in sicherheitsdokumente sowie verfahren zur herstellung desselben.
DE4041025C2 (de) * 1990-12-20 2003-04-17 Gao Ges Automation Org Magnetischer, metallischer Sicherheitsfaden mit Negativschrift
AT403967B (de) * 1992-11-18 1998-07-27 Oesterr Nationalbank Dokument und folienaufbau zur herstellung eines dokumentes
SG44393A1 (en) * 1993-06-08 1997-12-19 Reserve Bank Of Australia Trad Embossing of banknotes or the like with security devices
US6176522B1 (en) * 1993-06-08 2001-01-23 Securency Pty Ltd Embossing of bank notes or the like with security devices
GB2282563A (en) * 1993-10-07 1995-04-12 Central Research Lab Ltd A composite image arrangement for documents of value
DE4344298A1 (de) * 1993-12-23 1995-06-29 Giesecke & Devrient Gmbh Sicherheitspapier mit einem faden- oder bandförmigen Sicherheitselement
DE4344553A1 (de) * 1993-12-24 1995-06-29 Giesecke & Devrient Gmbh Sicherheitspapier mit einem faden- oder bandförmigen Sicherheitselement sowie Verfahren zur Herstellung desselben
US6961442B2 (en) * 2001-03-09 2005-11-01 Digimarc Corporation Watermarking a carrier on which an image will be placed or projected
FR2730332B1 (fr) * 1995-02-08 1997-03-28 Plasto Sa Etiquette de securite
US5697649A (en) * 1995-05-11 1997-12-16 Crane & Co., Inc. Articles employing a magnetic security feature
US5667249A (en) * 1995-09-05 1997-09-16 Pitney Bowes Inc. Stamp incorporating electronic article surveillance technology
GB2309778B (en) * 1996-02-05 2000-05-24 Mars Inc Security document validation
CN1083511C (zh) * 1996-03-12 2002-04-24 特种制纸株式会社 防伪纸及其制造方法
DE19611383A1 (de) * 1996-03-22 1997-09-25 Giesecke & Devrient Gmbh Datenträger mit optisch variablem Element
AU726523B2 (en) * 1996-09-26 2000-11-09 Securency International Pty Ltd Banknotes incorporating security devices
AUPO260296A0 (en) 1996-09-26 1996-10-24 Reserve Bank Of Australia Banknotes incorporating security devices
EP0938417B1 (en) * 1996-11-07 2000-06-14 The Governor And Company Of The Bank Of England Improvements in and relating to security documents
GB2323814B (en) * 1997-04-03 1999-06-02 Portals Ltd Security element for security paper
DE19812812A1 (de) * 1997-04-25 1999-09-23 Whd Elektron Prueftech Gmbh Aufbau von Sicherheitselementen für Dokumente und Vorrichtungen zur Prüfung von Dokumenten mit derartigen Sicherheitselementen sowie Verfahren zur Anwendung
US7129709B2 (en) 1997-04-25 2006-10-31 Whd Electronische Prueftechnik Method of testing documents provided with optico-diffractively effective markings
DE19718916A1 (de) * 1997-04-25 1998-10-29 Whd Elektron Prueftech Gmbh Anwendung und Verfahren zur Prüfung von Kokumenten mit beugungsoptisch wirksamen Sicherheitsschichten
DE19731968A1 (de) * 1997-07-24 1999-01-28 Giesecke & Devrient Gmbh Sicherheitsdokument
DE19812811A1 (de) * 1997-08-12 1999-09-23 Whd Elektron Prueftech Gmbh Aufbau von Sicherheitselementen für Dokumente und Vorrichtungen zur Prüfung von Dokumenten mit derartigen Sicherheitselementen sowie Verfahren zur Anwendung dieser Sicherheitselemente und Vorrichtungen
DE19734855B4 (de) * 1997-08-12 2005-09-08 WHD elektronische Prüftechnik GmbH Vorrichtung zur Prüfung beugungsoptisch wirksamer Sicherheitselemente
DE19735293C2 (de) † 1997-08-14 2003-06-12 Bundesdruckerei Gmbh Wert- und Sicherheitserzeugnis mit Lumineszenzelement
US5974150A (en) * 1997-09-30 1999-10-26 Tracer Detection Technology Corp. System and method for authentication of goods
DE19744953A1 (de) * 1997-10-10 1999-04-15 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
US5996893A (en) * 1997-10-28 1999-12-07 Eastman Kodak Company Method and apparatus for visually identifying an area on a photograph or image where digital data is stored
US6930606B2 (en) * 1997-12-02 2005-08-16 Crane & Co., Inc. Security device having multiple security detection features
UA52804C2 (uk) 1997-12-02 2003-01-15 Текнікал Графікс Сек'Юріті Продактс, Ллс Магнітний/металевий захисний пристрій (варіанти), спосіб його виготовлення (варіанти), спосіб встановлення його автентичності і металевий захисний пристрій
AUPP134298A0 (en) 1998-01-15 1998-02-05 Securency Pty Ltd Security document having visually concealed security indicia
DE19819571A1 (de) * 1998-04-30 1999-11-04 Giesecke & Devrient Gmbh Wertdokument mit Sicherheitselement
ES2190245T3 (es) * 1998-09-25 2003-07-16 Landqart Papel de seguridad y otros articulos de seguridad.
DE19907697A1 (de) * 1999-02-23 2000-08-24 Giesecke & Devrient Gmbh Wertdokument
GB9906452D0 (en) * 1999-03-19 1999-05-12 Rue De Int Ltd Security sheet and method
WO2001026060A2 (en) 1999-10-07 2001-04-12 Technical Graphics Security Products, Llc Security device with foil camouflaged magnetic regions and methods of making same
AUPQ492999A0 (en) * 1999-12-30 2000-02-03 Note Printing Australia Ltd Method of determining a characteristic of a security document, such as a bank note
FR2804447B1 (fr) * 2000-02-01 2002-04-05 Arjo Wiggins Sa Papier comportant un filigrane a effet multiton et toile pour fabriquer ce papier
FR2804448B1 (fr) * 2000-02-01 2002-04-05 Arjo Wiggins Sa Papier de securite comportant une zone de securite, procede pour realiser un tel papier et dispositif pour mettre en oeuvre ce procede
EP1150270B1 (de) * 2000-04-20 2001-12-05 TRICON Veredlungs GmbH Metallisiertes Papier mit eingearbeitetem Sicherheitsmerkmal
US7162035B1 (en) 2000-05-24 2007-01-09 Tracer Detection Technology Corp. Authentication method and system
US7122248B2 (en) 2001-02-21 2006-10-17 Honeywell International Inc. Security articles
WO2002069307A2 (en) * 2001-02-23 2002-09-06 Technical Graphics Security Products, Llc Security label having security element and method of making same
DE10162537A1 (de) * 2001-12-19 2003-09-04 Norbert Hampp Verfahren zur Authentizitätssicherung von Dokumenten
DE10226114A1 (de) 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Sicherheitselement für Sicherheitspapiere und Wertdokumente
DE10226116A1 (de) * 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
KR100448999B1 (ko) * 2001-12-31 2004-09-16 한국조폐공사 양면에 부분노출 은선이 삽입된 보안 용지를 제조하는 방법
DE10207622A1 (de) * 2002-02-22 2003-09-04 Giesecke & Devrient Gmbh Sicherheitsdokument und Sicherheitselement für ein Sicherheitsdokument
AU2003209916A1 (en) * 2002-04-04 2003-10-20 Landqart Device for verifying security features
DE50306308D1 (de) * 2002-04-04 2007-03-08 Landqart Vorrichtung zur verifikation von sicherheitsmerkmalen
DE10218897A1 (de) * 2002-04-26 2003-11-06 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
FR2839917B1 (fr) * 2002-05-22 2004-10-08 Arjo Wiggins Article forme a partir d'au moins un jet de matiere fibreuse comportant au moins une zone d'epaisseur nulle et procede de fabrication dudit article
AT411820B (de) * 2002-06-06 2004-06-25 Teich Ag Fälschungssichere metallfolie
US20060016109A1 (en) * 2002-06-11 2006-01-26 Nicolaas Maritz G Advertising media
DE10255639A1 (de) * 2002-11-28 2004-06-17 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zur Herstellung desselben
US7207490B2 (en) * 2003-03-24 2007-04-24 Giesecke & Devrient Gmbh Security element
CN100412892C (zh) * 2003-06-10 2008-08-20 克瑞尼股份有限公司 改进的保密装置
US7243951B2 (en) * 2003-08-19 2007-07-17 Technical Graphics, Inc. Durable security devices and security articles employing such devices
EP1552956A1 (en) * 2004-01-08 2005-07-13 Kba-Giori S.A. Process for film application
GB0409736D0 (en) 2004-04-30 2004-06-09 Rue De Int Ltd Improvements in substrates incorporating security device
EP1652688A1 (en) * 2004-10-29 2006-05-03 Arjowiggins Security Security device
DE102005022018A1 (de) * 2005-05-12 2006-11-16 Giesecke & Devrient Gmbh Sicherheitspapier und Verfahren zu seiner Herstellung
DE102005032815A1 (de) * 2005-07-12 2007-01-18 Giesecke & Devrient Gmbh Verfahren zur Herstellung eines Sicherheitspapiers, Papiersieb und Formelement für Papiersieb
TWI408269B (zh) 2005-07-12 2013-09-11 Toppan Printing Co Ltd 防偽用紙及防偽用紙之真假判定方法
FR2891761B1 (fr) * 2005-10-06 2008-04-04 Arjowiggins Security Soc Par A Procede de fabrication d'un materiau en feuille comportant au moins une fenetre.
FR2897078B1 (fr) * 2006-02-09 2011-08-19 Arjowiggins Materiau en feuille comportant au moins un filigrane avec une nuance coloree.
FR2901812B1 (fr) * 2006-06-06 2008-12-05 Arjowiggins Security Soc Par A Element de securite comprenant un motif discernable
DE102006039305A1 (de) * 2006-07-21 2008-01-24 Giesecke & Devrient Gmbh Sicherheitsfaden mit optisch variablem Sicherheitsmerkmal
DE102007030219A1 (de) * 2007-02-13 2008-08-14 Giesecke & Devrient Gmbh Sicherheitselement für ein Wertdokument
GB2456500B (en) 2007-10-23 2011-12-28 Rue De Int Ltd Improvements in security elements
FR2925535B1 (fr) * 2007-12-21 2011-05-06 Arjowiggins Licensing Sas Feuille de securite comprenant un substrat fibreux comportant au moins un filigrane
FR2929962B1 (fr) * 2008-04-11 2021-06-25 Arjowiggins Licensing Sas Procede de fabrication d'une feuille comportant une sous- epaisseur ou une sur-epaisseur au niveau d'un ruban et feuille associee.
US7995196B1 (en) 2008-04-23 2011-08-09 Tracer Detection Technology Corp. Authentication method and system
DK2300238T3 (da) * 2008-05-16 2013-12-16 Datacard Corp Skyggebillede-sikkerhedstræk
DE102008028187A1 (de) * 2008-06-12 2009-12-17 Giesecke & Devrient Gmbh Sicherheitselement mit optisch variablem Element.
CA2656506A1 (en) * 2009-02-27 2010-08-27 Bank Of Canada Security device
DE102010019194A1 (de) † 2010-05-04 2011-11-10 Giesecke & Devrient Gmbh Wertdokument mit Ausnehmung
DE102010022123C5 (de) 2010-05-20 2023-03-02 Leonhard Kurz Stiftung & Co. Kg Sicherheitselement
DE102010054760A1 (de) * 2010-12-16 2012-02-16 Giesecke & Devrient Gmbh Sicherheitselement, Verfahren zum Herstellen desselben und Datenträger
WO2012153114A1 (en) * 2011-05-06 2012-11-15 D W Spinks (Embossing) Limited Windowed security device
GB201316348D0 (en) * 2013-09-13 2013-10-30 Andrews & Wykeham Ltd Security laminate/foil
GB2535985B (en) * 2015-02-24 2019-11-06 Portals De La Rue Ltd Improvements in security documents
US10036125B2 (en) 2015-05-11 2018-07-31 Nanotech Security Corp. Security device
EP3109362A1 (en) * 2015-06-26 2016-12-28 European Central Bank Paper incorporating an embedded foil and method for manufacturing
ES2884268T3 (es) * 2015-12-17 2021-12-10 Sicpa Holding Sa Elemento de seguridad formado a partir de al menos dos tintas aplicadas en patrones superpuestos, artículos que llevan el elemento de seguridad y métodos de autentificación
RU2729995C1 (ru) * 2017-02-20 2020-08-13 Иллинойс Тул Воркс Инк. Непроводящая магнитная полоса в сборе
DE102019005707A1 (de) * 2019-08-14 2021-02-18 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement
DE102019005705A1 (de) * 2019-08-14 2021-02-18 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement

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DE2001944A1 (de) * 1970-01-16 1971-07-22 Siemens Ag Banknoten
BE792488A (fr) * 1971-12-08 1973-03-30 Dainippon Printing Co Ltd Cartes d'identification et procede de fabrication de ces cartes
US4066280A (en) * 1976-06-08 1978-01-03 American Bank Note Company Documents of value printed to prevent counterfeiting
DE2907809B2 (de) * 1979-02-28 1981-01-15 Gao Gesellschaft Fuer Automation Und Organisation Mbh, 8000 Muenchen Ausweiskarte und Verfahren zu ihrer Herstellung
US4591189A (en) * 1983-12-27 1986-05-27 Minnesota Mining And Manufacturing Company Document having light-transmissive, electrically conductive authenticating interior layer
DE3779918D1 (de) * 1987-08-19 1992-07-23 Gao Ges Automation Org Sicherheitspapier.
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Also Published As

Publication number Publication date
FI932532A0 (fi) 1993-06-03
JPH06503128A (ja) 1994-04-07
ES2070625T3 (es) 1995-06-01
TW206273B (es) 1993-05-21
ATE121150T1 (de) 1995-04-15
WO1992010608A1 (en) 1992-06-25
DK0563109T3 (da) 1995-07-03
EP0563109B1 (en) 1995-04-12
AU9031791A (en) 1992-07-08
PL168881B1 (pl) 1996-04-30
FI932532A7 (fi) 1993-06-03
EP0563109A1 (en) 1993-10-06
CN1064832A (zh) 1992-09-30
AU651857B2 (en) 1994-08-04
DE69108932T2 (de) 1995-08-24
GB2250474B (en) 1994-04-20
BR9107204A (pt) 1993-11-03
CA2096649A1 (en) 1992-06-05
US5388862A (en) 1995-02-14
GB9026379D0 (en) 1991-01-23
SI9111840A (en) 1994-09-30
DE69108932D1 (de) 1995-05-18
HU9301641D0 (en) 1993-11-29
FI932532L (fi) 1993-06-03
KR930703511A (ko) 1993-11-30
CN1031386C (zh) 1996-03-27
GB2250474A (en) 1992-06-10
HUT67614A (en) 1995-04-28

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