NL8200656A - Uit plaatvormig materiaal bestaand, geverifieerd voorwerp met een reflectieve-diffractieve verifieerinrichting. - Google Patents

Uit plaatvormig materiaal bestaand, geverifieerd voorwerp met een reflectieve-diffractieve verifieerinrichting. Download PDF

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Publication number
NL8200656A
NL8200656A NL8200656A NL8200656A NL8200656A NL 8200656 A NL8200656 A NL 8200656A NL 8200656 A NL8200656 A NL 8200656A NL 8200656 A NL8200656 A NL 8200656A NL 8200656 A NL8200656 A NL 8200656A
Authority
NL
Netherlands
Prior art keywords
refractive
color
order
transparent material
refraction
Prior art date
Application number
NL8200656A
Other languages
English (en)
Dutch (nl)
Original Assignee
Rca Corp
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
Application filed by Rca Corp filed Critical Rca Corp
Publication of NL8200656A publication Critical patent/NL8200656A/nl

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
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B42D25/324—Reliefs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1842—Gratings for image generation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
    • 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
    • B42D2033/04—
    • B42D2033/20—
    • B42D2035/02—
    • 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
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/916—Fraud or tamper detecting

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Holo Graphy (AREA)
NL8200656A 1981-02-19 1982-02-18 Uit plaatvormig materiaal bestaand, geverifieerd voorwerp met een reflectieve-diffractieve verifieerinrichting. NL8200656A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23597081 1981-02-19
US06/235,970 US4892385A (en) 1981-02-19 1981-02-19 Sheet-material authenticated item with reflective-diffractive authenticating device

Publications (1)

Publication Number Publication Date
NL8200656A true NL8200656A (nl) 1982-09-16

Family

ID=22887603

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8200656A NL8200656A (nl) 1981-02-19 1982-02-18 Uit plaatvormig materiaal bestaand, geverifieerd voorwerp met een reflectieve-diffractieve verifieerinrichting.

Country Status (10)

Country Link
US (1) US4892385A (it)
JP (1) JPS6023040B2 (it)
CA (1) CA1185370A (it)
CH (1) CH661602A5 (it)
DE (1) DE3206062A1 (it)
ES (1) ES8303759A1 (it)
FR (1) FR2500020A1 (it)
GB (1) GB2093404B (it)
IT (1) IT1200367B (it)
NL (1) NL8200656A (it)

Families Citing this family (89)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484797A (en) * 1981-07-20 1984-11-27 Rca Corporation Diffractive subtractive color filter responsive to angle of incidence of polychromatic illuminating light
CH653161A5 (de) * 1981-10-27 1985-12-13 Landis & Gyr Ag Dokument mit einem sicherheitsmerkmal und verfahren zur echtheitspruefung des dokumentes.
US4576439A (en) * 1982-09-15 1986-03-18 Rca Corporation Reflective diffractive authenticating device
CH659433A5 (de) * 1982-10-04 1987-01-30 Landis & Gyr Ag Dokument mit einem beugungsoptischen sicherheitselement.
GB2128549B (en) * 1982-10-13 1986-02-12 Standard Telephones Cables Ltd Debit/credit card
JPS5988780A (ja) * 1982-11-08 1984-05-22 アメリカン・バンク・ノ−ト・カムパニ− 光回折記録体及び光回折パタ−ンを作る方法
JPS605557U (ja) * 1983-06-24 1985-01-16 筒中プラスチツク工業株式会社 偽造防止カ−ド
JPS6016389U (ja) * 1983-07-14 1985-02-04 大日本印刷株式会社 偽造防止可能な磁気テ−プ
CH661368A5 (de) * 1984-01-03 1987-07-15 Landis & Gyr Ag Beugungsoptisches sicherheitselement.
DE3422910C1 (de) * 1984-06-20 1985-09-05 Leonhard Kurz GmbH & Co, 8510 Fürth Praegefolie,insbesondere Heisspraegefolie mit einer Magnetschicht
AU4922485A (en) * 1984-11-09 1986-05-15 Canadian Patents And Development Limited Optical interference authenticating device
DE3650027T2 (de) * 1985-05-07 1995-01-26 Dainippon Printing Co Ltd Artikel mit transparentem Hologramm.
DE3608746A1 (de) * 1986-03-15 1987-09-17 Kolbe Druck Gmbh & Co Kg Faelschungssicheres schild, dienstsiegel, zulassungs- oder pruefplakette
US5360628A (en) * 1986-04-30 1994-11-01 Butland Trust Organization Technique for labeling an object for its identification and/or verification
US4832445A (en) * 1986-05-16 1989-05-23 American Bank Note Holographics, Inc. Security diffraction devices difficult to exactly duplicate
US5145212A (en) † 1988-02-12 1992-09-08 American Banknote Holographics, Inc. Non-continuous holograms, methods of making them and articles incorporating them
DE3866230D1 (de) * 1988-03-03 1991-12-19 Landis & Gyr Betriebs Ag Dokument.
JP2532598B2 (ja) * 1988-08-03 1996-09-11 シャープ株式会社 光メモリ素子の製造方法及びその装置
GB8913417D0 (en) * 1989-06-10 1989-08-02 Emi Plc Thorn Verification device for a security system
JPH05307633A (ja) * 1992-04-28 1993-11-19 Nhk Spring Co Ltd 対象物の識別構造及び識別方法
US5142383A (en) * 1990-01-25 1992-08-25 American Banknote Holographics, Inc. Holograms with discontinuous metallization including alpha-numeric shapes
US5213373A (en) * 1990-08-06 1993-05-25 Severino Ramos Mark position independent form and tallying method
GB9025390D0 (en) * 1990-11-22 1991-01-09 De La Rue Thomas & Co Ltd Security device
US5538753A (en) * 1991-10-14 1996-07-23 Landis & Gyr Betriebs Ag Security element
EP0537439B2 (de) * 1991-10-14 2003-07-09 OVD Kinegram AG Sicherheitselement
US5403040A (en) * 1992-03-30 1995-04-04 The Standard Register Company Optically variable and machine-readable device for use on security documents
JPH05289612A (ja) * 1992-04-06 1993-11-05 Nhk Spring Co Ltd 情報記録システム及び情報通信システム
US5296949A (en) * 1992-04-23 1994-03-22 Flexcon Company Inc. Optical authentication device
AT403967B (de) * 1992-11-18 1998-07-27 Oesterr Nationalbank Dokument und folienaufbau zur herstellung eines dokumentes
BE1006699A5 (fr) * 1992-12-08 1994-11-22 Belgique Banque Nat Document protege contre la reproduction et procede d'obtention d'un tel document.
DE4404128A1 (de) * 1993-02-19 1994-08-25 Gao Ges Automation Org Sicherheitsdokument und Verfahren zu seiner Herstellung
US5464690A (en) * 1994-04-04 1995-11-07 Novavision, Inc. Holographic document and method for forming
GB9406794D0 (en) * 1994-04-06 1994-05-25 Applied Holographics Protected relief patterns
DE4421407C1 (de) * 1994-06-18 1995-06-01 Kurz Leonhard Fa Flächenelement mit einer räumlichen, bereichsweise beschichteten Mikrostruktur sowie Verwendung eines solchen Flächenelements
DE4432062C1 (de) * 1994-09-09 1995-11-30 Kurz Leonhard Fa Visuell identifizierbares optisches Element
EP0712012A1 (en) * 1994-11-09 1996-05-15 International Business Machines Corporation Authentication label and authenticating pattern incorporating diffracting structure and method of fabricating them
US5591527A (en) * 1994-11-02 1997-01-07 Minnesota Mining And Manufacturing Company Optical security articles and methods for making same
DE19516741C2 (de) * 1995-05-06 1997-05-07 Kurz Leonhard Fa Beugungsoptisch wirksame Strukturanordnung
US5873604A (en) * 1995-05-25 1999-02-23 Verify First Technologies, Inc. Document security system having thermo-activated pantograph and validation mark
US5704651A (en) * 1995-05-25 1998-01-06 Verify First Technologies, Inc. Counterfeit resistant documents and methods
US5772248A (en) * 1995-12-07 1998-06-30 Verify First Technologies, Inc. Document with tamper and counterfeit resistant relief markings
US5886798A (en) * 1995-08-21 1999-03-23 Landis & Gyr Technology Innovation Ag Information carriers with diffraction structures
DE69623044T2 (de) * 1996-01-26 2003-03-20 Ovd Kinegram Ag Zug Oberflächenmuster
US5762378A (en) * 1996-02-16 1998-06-09 Verify First Technologies, Inc. Tamper resistant validation marks
WO1998010324A1 (de) * 1996-09-04 1998-03-12 Electrowatt Technology Innovation Ag Flächenmuster mit wenigstens zwei verschiedenen lichtbeugenden reliefstrukturen für optische sicherheitselemente
DE29700998U1 (de) * 1997-01-10 1997-03-13 Bundesdruckerei GmbH, 10969 Berlin Datenträger
CH693517A5 (de) * 1997-06-06 2003-09-15 Ovd Kinegram Ag Flächenmuster.
EP1019876A1 (en) 1997-09-30 2000-07-19 Durand Limited Anti-counterfeiting and diffusive screens
EP0999525B1 (en) * 1998-11-06 2006-04-05 Kyodo Printing Co., Ltd. Forgery resisting security document
FR2801246B1 (fr) * 1999-11-19 2002-01-25 Hologram Ind Securisation de documents ou de produits par apposition d'un composant optiquement actif pour la verification de l'authenticite
DE10054503B4 (de) * 2000-11-03 2005-02-03 Ovd Kinegram Ag Lichtbeugende binäre Gitterstruktur und Sicherheitselement mit einer solchen Gitterstruktur
US7102823B2 (en) * 2002-01-18 2006-09-05 Ovd Kinegram Ag Diffractive security element having an integrated optical waveguide
JP2004109417A (ja) * 2002-09-18 2004-04-08 Dainippon Printing Co Ltd 光回折構造の製造方法、複製版材、及び媒体
US20040099740A1 (en) * 2002-11-25 2004-05-27 Chresand Thomas J. Merchandising components for authenticating products, and combinations and methods utilizing the same
FR2849708B1 (fr) * 2003-01-03 2005-03-11 Banque De France Dispositif de securite en guide d'onde
US6980654B2 (en) * 2003-09-05 2005-12-27 Graphic Security Systems Corporation System and method for authenticating an article
US7029525B1 (en) 2003-10-21 2006-04-18 The Standard Register Company Optically variable water-based inks
TR200602505T1 (tr) * 2003-11-21 2007-01-22 Nanoventions, Inc. Mikro-Optik güvenlik ve görüntü sunum sistemi
US8867134B2 (en) * 2003-11-21 2014-10-21 Visual Physics, Llc Optical system demonstrating improved resistance to optically degrading external effects
DE102004017093B4 (de) 2004-04-07 2007-09-20 Leonhard Kurz Gmbh & Co. Kg Prägefolie zur Herstellung fälschungssicherer Kraftfahrzeug-Nummernschilder und fälschungssicheres Kraftfahrzeug-Nummernschild mit einer solchen Prägefolie sowie Verwendung
WO2006001012A2 (en) * 2004-06-25 2006-01-05 Technion Research And Development Foundation Ltd. Geometrical phase data encryption and decryption
GB0417422D0 (en) 2004-08-05 2004-09-08 Suisse Electronique Microtech Security device
EP2660070A1 (en) 2005-05-18 2013-11-06 Visual Physics, LLC Image presentation and micro-optic security system
KR20090028523A (ko) * 2006-05-12 2009-03-18 크레인 앤드 캄파니 인코퍼레이티드 진품 문서 또는 라벨 단독으로 또는 함께, 정적 이미지 및/또는 그외 다른 투사 이미지와 공간적으로 조화를 이루고 움직이는 마이크로-광학 필름 구조
EP2410370A1 (en) * 2006-06-28 2012-01-25 Visual Physics, LLC Micro-optic security and image presentation system
JP4876853B2 (ja) * 2006-10-24 2012-02-15 凸版印刷株式会社 Ｏｖｄ媒体、およびｏｖｄ媒体を備える情報印刷物
WO2009066970A1 (en) * 2007-11-19 2009-05-28 Sergiu Vasiliev Method for verifying the authencity of document
DE102007061979A1 (de) 2007-12-21 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement
EP2109014A1 (en) * 2008-04-08 2009-10-14 JDS Uniphase Corporation Improved OVD containing device
DE102008036670B3 (de) * 2008-08-06 2009-11-26 Leonhard Kurz Stiftung & Co. Kg Folie, Verfahren zu deren Herstellung, sowie Verwendung
EP2414130B2 (en) 2009-03-30 2019-04-24 Boegli-Gravures S.A. Method and device for structuring a solid body surface with a hard coating with a first laser with pulses in the nanosecond field and a second laser with pulses in the pico- or femtosecond field ; packaging foil
ES2541834T3 (es) * 2009-03-30 2015-07-27 Boegli-Gravures S.A. Procedimiento y dispositivo para estructurar una superficie de cuerpo sólido con un revestimiento duro con un láser que utilizan máscara y diafragma
JP5784015B2 (ja) * 2009-08-12 2015-09-24 ビジュアル フィジクス エルエルシー 改竄表示光セキュリティデバイス
DE102009056934A1 (de) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes
DE102010047250A1 (de) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes
EP2668526B1 (en) 2011-01-28 2018-07-04 Crane & Co., Inc. A laser marked device
DE102011108242A1 (de) 2011-07-21 2013-01-24 Giesecke & Devrient Gmbh Optisch variables Element, insbesondere Sicherheitselement
US10890692B2 (en) 2011-08-19 2021-01-12 Visual Physics, Llc Optionally transferable optical system with a reduced thickness
KR102014576B1 (ko) 2012-08-17 2019-08-26 비쥬얼 피직스 엘엘씨 미세구조물을 최종 기판에 전사하기 위한 프로세스
DE102012108169A1 (de) 2012-09-03 2014-05-28 Ovd Kinegram Ag Sicherheitselement sowie Sicherheitsdokument
JP6091883B2 (ja) * 2012-12-19 2017-03-08 株式会社東芝 集光体及び太陽電池
RU2673137C9 (ru) 2013-03-15 2019-04-04 Визуал Физикс, Ллс Оптическое защитное устройство
US9873281B2 (en) 2013-06-13 2018-01-23 Visual Physics, Llc Single layer image projection film
US10766292B2 (en) 2014-03-27 2020-09-08 Crane & Co., Inc. Optical device that provides flicker-like optical effects
MX2016012305A (es) 2014-03-27 2017-02-23 Visual Physics Llc Un dispositivo optico que produce efectos opticos tipo parpadeo.
CA3230729A1 (en) 2014-07-17 2016-01-21 Visual Physics, Llc An improved polymeric sheet material for use in making polymeric security documents such as banknotes
BR112017005319A2 (pt) 2014-09-16 2017-12-12 Crane Security Tech Inc ?camada de lente segura?.
CA2976218C (en) 2015-02-11 2023-02-14 Crane & Co., Inc. Method for the surface application of a security device to a substrate
MX2019009459A (es) 2017-02-10 2019-12-16 Crane & Co Inc Dispositivo de seguridad optico legible por maquina.

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643216A (en) * 1968-08-06 1972-02-15 Rca Corp Holographic identification system
CA944987A (en) * 1972-01-18 1974-04-09 National Research Council Of Canada Optical interference authenticating means
US3858977A (en) * 1972-01-18 1975-01-07 Canadian Patents Dev Optical interference authenticating means
US3814904A (en) * 1972-10-20 1974-06-04 Rca Corp Cryptographically coded cards employing synthetic light modifying portion
US3961836A (en) * 1974-09-20 1976-06-08 Rca Corporation Focused-image hologram system providing increased optical readout efficiency
US3957354A (en) * 1975-02-03 1976-05-18 Rca Corporation Diffractive subtractive color filtering technique
US4034211A (en) * 1975-06-20 1977-07-05 Ncr Corporation System and method for providing a security check on a credit card
CH588358A5 (it) * 1975-08-14 1977-05-31 Landis & Gyr Ag
US4184700A (en) * 1975-11-17 1980-01-22 Lgz Landis & Gyr Zug Ag Documents embossed with optical markings representing genuineness information
CH594936A5 (it) * 1975-11-17 1978-01-31 Landis & Gyr Ag
GB1538342A (en) * 1976-01-19 1979-01-17 Rca Corp Structure and recording for diffractive relief images for zero-order read-out in black-and-white
DE2613034A1 (de) * 1976-03-26 1977-09-29 Siemens Ag Faelschungssichere ausweiskarte mit lippmann-bragg-hologramm
GB1552853A (en) * 1976-09-24 1979-09-19 Bank Of England Authentication devices
FR2418955A1 (fr) * 1978-03-02 1979-09-28 Instruments Sa Procede de codage et de reconnaissance de cartes d'acces
DE2853953A1 (de) * 1978-12-14 1980-07-03 Hoechst Ag Identifikationskarte
CH640649A5 (de) * 1979-01-31 1984-01-13 Landis & Gyr Ag Einrichtung zur bargeldlosen bezahlung von waren oder dienstleistungen.

Also Published As

Publication number Publication date
GB2093404A (en) 1982-09-02
FR2500020A1 (fr) 1982-08-20
FR2500020B1 (it) 1985-01-04
US4892385A (en) 1990-01-09
ES509556A0 (es) 1983-02-01
DE3206062A1 (de) 1982-08-19
GB2093404B (en) 1985-02-27
IT8219720A0 (it) 1982-02-18
ES8303759A1 (es) 1983-04-01
IT1200367B (it) 1989-01-18
DE3206062C2 (it) 1987-06-11
JPS6023040B2 (ja) 1985-06-05
JPS57159696A (en) 1982-10-01
CA1185370A (en) 1985-04-09
CH661602A5 (de) 1987-07-31

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Legal Events

Date Code Title Description
BT A notification was added to the application dossier and made available to the public
A85 Still pending on 85-01-01
BV The patent application has lapsed