EP0447335A1 - Abgabevorrichtung für ein pastöses Produkt, das mit einer regulierbaren Menge eines sekundären pastösen Produktes gemischt wird, und ihre Benutzung - Google Patents

Abgabevorrichtung für ein pastöses Produkt, das mit einer regulierbaren Menge eines sekundären pastösen Produktes gemischt wird, und ihre Benutzung Download PDF

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Publication number
EP0447335A1
EP0447335A1 EP91420086A EP91420086A EP0447335A1 EP 0447335 A1 EP0447335 A1 EP 0447335A1 EP 91420086 A EP91420086 A EP 91420086A EP 91420086 A EP91420086 A EP 91420086A EP 0447335 A1 EP0447335 A1 EP 0447335A1
Authority
EP
European Patent Office
Prior art keywords
wall
cover
valve
pasty product
tube
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP91420086A
Other languages
English (en)
French (fr)
Inventor
Bernard Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Tubes France SAS
Original Assignee
Cebal SAS
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 Cebal SAS filed Critical Cebal SAS
Publication of EP0447335A1 publication Critical patent/EP0447335A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1081—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping

Definitions

  • the invention relates to a pasty product dispenser with pumping system and its use.
  • a pasty product dispenser comprising a body delimiting a storage chamber for said pasty product, as well as a compression chamber delimited by a wall surmounting this storage chamber, by a suction valve comprising a valve which slides in a central orifice of said wall and has a rim which bears in leaktight manner on this wall, and by a valve for expelling the pasty product towards the dispensing orifice (s).
  • the pasty product from the storage chamber is supported by a piston which slides in said body in a sealed manner to the pasty product.
  • a dispenser makes it possible to deliver metered quantities of pasty bead, the bottom support of its actuator and its return, typically elastic, controlling a distribution and pumping cycle of the pasty product. It does not make it possible to obtain a pasty striped bead.
  • Patent application EP-A-0345458 also discloses a pasty product dispenser comprising a body delimiting a storage chamber for at least one main pasty product and a pumping system delimited by a wall surmounting this storage chamber. and by a suction valve, this valve sliding in an orifice of said wall and having a flange which bears in leaktight manner on this wall in the low position of the valve, and this wall carrying on the side of the storage chamber a tube separator surrounding said valve and with open upper and lower ends as well as orifices for the passage of a secondary product contained in the annular gap comprised between the separator tube and said body.
  • This wall is then a frustoconical rim forming the bottom of the pumping chamber. There is no compression chamber.
  • This dispenser makes it possible to obtain a bead of pasty product carrying colored secondary product scratches.
  • the Applicant has posed the problem of distributing a pasty bead in reproducible and adjustable quantities containing at least one secondary product, this secondary product being visible in or on this pasty bead.
  • This visibility condition would allow either to recognize the product distributed, or to use this heterogeneous distribution of the secondary product in the pasty product distributed to ensure that there is sufficient work of the paste after its application, this work , for example a massage, which should result in a homogenization of the color of the dough thus worked.
  • a “paste” or “pasty product” also means a thick cream.
  • the subject of the invention is, as known from EP-A-0345458, a pasty product dispenser comprising a body delimiting a storage chamber for at least one main pasty product and a pumping system delimited by a wall surmounting said chamber. storage and by a suction valve, said valve sliding in a typically central orifice of said wall and having a flange which bears in leaktight manner on said wall in the low position of said valve, this wall bearing on the side of said storage chamber a separator tube surrounding the valve and at the open end and comprising passage orifices in the pumping chamber of at least one secondary pasty product contained between said separator tube and said body, these passage orifices being external to said separator tube.
  • the fixed wall is doubled surmounting the actuator, wall which carries both the separator tube and the passage orifices, of a rotating cover carrying through windows, the rotation of said cover progressively masking or uncovering the orifices of the said fixed wall, the valve then coming into its low closed position these through windows whatever their positions.
  • the rotating cover and said wall are in contact by surfaces of revolution about the same axis, for example the longitudinal axis of the dispenser. These surfaces of revolution can be planes perpendicular to said axis.
  • the top of said rotating cover has a flat surface surrounding the typically central orifice for suction of the main pasty product in the pumping or compression chamber, and this flat surface constitutes the seat of the suction valve, the underside of the flap flange coming. apply tightly on this surface in the closed position of the valve, that is to say when the pumping or compression chamber has its volume reduced by the support of the actuator.
  • the construction is simplified when the contacting surfaces of said wall and said cover on the one hand and said cover and said valve in the low position on the other hand are flat and parallel to each other.
  • the through windows then typically open onto this same flat surface of the cover, the underside of the flange rim being plane from the periphery of the central orifice to at least the outside of the upper ends of these windows.
  • the passage openings extended by the through windows are used as passage openings for at least one secondary pasty product contained in all or part of the annular gap between said separator tube and said body.
  • the successive aspirations cause a reduction in the quantity of secondary product in its annular sectoral peripheral storage interval, the rise of this product being then accompanied by an increase in the main pasty product. It was found that the pasty cords delivered had a mottled appearance reproducible, the colored secondary product itself being introduced into the main product in reproducible quantities from one press to the other of the actuator, and the passage through the compression chamber and by the expulsion incorporating the secondary product into the main product, which is of viscosity usually close to that of this main product but of reduced miscibility with it, without carrying out a thorough mixing or homogenization.
  • Reproducible mixed pasty cords in which the secondary product (s) are still visible, are obtained from the second press of the actuator and, the quantity or quantities of secondary product (s) delivered at each suction and therefore at each press of the actuator is or are adjustable.
  • the rotating cover can be guided in its rotation by the cooperation of two circular reliefs of this cover, and of the fixed wall.
  • the fixed wall and the cover are preferably in sealed contact, so as to avoid infiltration of pasty products between their faces in contact, infiltrations which would be detrimental to the proper functioning of the rotating cover, and the circular reliefs are then preferably carried by these faces in contact and embedded in each other, for example a circular rib embedded in a circular groove.
  • the adjustment of the dosage of secondary product in the pasty beads distributed is then preferably made using at least one projecting lateral portion of said rotating cover. and the position of this cover can give rise to the reading of a colored product flow mark. More sensitive settings are obtained by using elongated annular windows of variable width.
  • annular gap between the separator tube and the body of the distributor and the storage chamber can be divided into several sectors by transverse partitions connecting this tube and this body, so as to contain different secondary products between them, each sector being provided with at least one passage orifice.
  • Such a structure can be used to serve a preferential distribution of a secondary product in the pasty bead, one or more sectors being occupied by the main pasty product.
  • a pumping system comprising a deformable tubular pumping element delimiting a compression chamber fixed on said cover above the storage chamber, element known in itself by the cited document.
  • an expulsion valve comprising a flexible disc the periphery of which is held in abutment on an upper end edge of said deformable element, such a valve being known from the publication EP-A-0309367 by the applicant and sliding at reduced expulsion efforts.
  • This publication also describes the suction valve of the Examples which follow, this valve reduces the return time of the actuator when the thickness of the deformable veil of said deformable element is sufficiently small.
  • the distributor body is a rigid metal tube, containing after assembly a sliding piston, the lower end of the tube being optionally provided with a foot allowing the air to pass below the piston, and the top of the tube being constricted into a substantially frustoconical shoulder ending in a rolled edge.
  • the wall surmounting the storage chamber and carrying the suction valve as well as the separator tube and the passage orifices is then preferably fixed on this rolled edge, this wall comprising a lateral lateral position on which a circular profiled part comes hook by tightly sealing the deformable tubular element on said wall.
  • This circular profiled part may have an external surface serving for the axial sliding of the actuator of the dispenser and another external surface serving for the fitting of a cover, this part preferably resting on the shoulder of the tube, which facilitates its assembly and improves its stability, therefore that of its locking of the deformable tubular element.
  • the distributor has a rotating cover for adjusting the flow rate (s) of secondary product (s)
  • said circular profiled piece for clamping the deformable tubular element on said wall as a means of driving the cover rotating in rotation.
  • the protruding lateral portion of this cover is embedded in a recess or an opening in the lateral clamping portion of this profiled part.
  • the peripheral lateral portion of said wall itself extends into a shoulder coming to bear on the shoulder of the tube while the circular profiled part rests directly on said shoulder of the peripheral portion.
  • the outside of the circular profiled part may then have an interruption or notch making it possible to read a flow mark carried by the underlying shoulder, that is to say the shoulder of the tube or the shoulder of the portion side of the wall.
  • the invention also relates to the use of the preceding dispenser for the distribution of a dough mixed in a heterogeneous manner with a colored pasty product, this dough having to be brewed and the brewing work being controlled by the homogenization of the dough. .
  • Figure 1 shows a dispenser according to the invention, in axial section.
  • FIG. 2 shows a cover with through windows of this dispenser, in half-view from above.
  • FIG. 3 shows the same dispenser in a complete view, also in axial section.
  • the dispenser 1 of FIG. 1 comprises a rigid tubular body 2 of aluminum, the upper end of which has been constricted along a frustoconical shoulder 3, this shoulder ending in a rolled edge 4.
  • the top of the storage chamber 5 is delimited by this shoulder 3 as well as by the horizontal portion 6 of an annular plastic wall 7 which also includes a peripheral lateral portion 8 having an inner groove 9 snapped onto the end of the rolled edge 4.
  • the face lower part of the horizontal portion 6 of the wall 7 carries a crown 11 or separating tube 11 which descends a little below the beginning of the shoulder 3 and defines with the body 2 an annular interval 12 which will contain at least one secondary pasty product or "colored product".
  • the inner surface of the separator tube 11 is spaced from the retaining ring 17 of the valve 24 by 0.5 mm.
  • the wall 7 or more precisely its horizontal portion 6 carries outside and at the foot of the separator tube 11 four orifices 13 for the passage of the colored product 14 whose filling level 15 slightly wavy slightly exceeds the bottom of the shoulder 3. These through holes are located every 90 ° and 2.5 mm in diameter.
  • An annular cover or wall 16 is placed on the wall 7, its circular groove 161 fitting onto the circular rib 18 of the upper face of the wall 6 or 7, and it carries four regularly spaced through windows 19.
  • the cover 16 can rotate relative to the wall 7 and to the foot 20 of the deformable tubular element 21, it comprises a transverse lug 22 embedded in an opening of a circular profiled part 23 which is used for its drive.
  • the valve 24 has a web 25 which closes here both the central suction opening 26 and the through windows 19.
  • This valve 24 operates in the same way with a single wall 7 or with a thickened wall (7 + 16) , the distance between the retaining ring 17 of the valve 24 and the underside of the web (25) at the periphery of the orifice 26 however being increased in the second case (this example).
  • the compression chamber 31 of the dispenser 1 comprises the deformable tubular element 21, the deformable veil 32 of which has a thickness limited to 0.8 mm and the upper tube 33 of which carries a flexible cap 34 connected to this tube 33 by three flexible rods 35 , this cover 34 constituting with the upper end of the tube 33 the expulsion valve.
  • the foot 20 of the tubular element 21 is clamped to the wall 7 by the internal rim 36 of the circular profiled part 23 snapped into an external groove 37 of the lateral portion 8 of the wall 7, this arrangement allowing the rotation of the part profiled 23 driving the cover 16 by its lug 22.
  • the profiled part 23 also comprises a rising tube whose external surface 38 is used for the axial guidance of the actuator 27, and a descending tube whose external surface 39 is used for fitting the hood 40 with a slight forcing.
  • This part 23 rests on a shoulder-shaped extension 41 of the lateral portion 8 of the wall 7, this extension 41 resting itself on the shoulder 3 of the tube 2 which facilitates mounting and ensures the stability of the assembly.
  • the downward external surface tubing 39 is interrupted on 1 cm between two small partitions 42, inviting to observe the flow marks which are worn on the circumference of the shoulder 41 of part 7, at level 43 located before the support of the part 23 on this shoulder 41.
  • the four through windows 19, centered at the same distance from the main axis of symmetry 42 as the passage orifices 13, are of diameter 3 mm, the slight over-diameter relative to the diameter of the orifices 13 ensuring normal suction of the pasty product.
  • the through windows 190 still centered in the same way, have a width varying from 3 mm to 1 mm over a circumferential length of 6 mm, rounded ends not included, which allows more sensitive adjustment. of the secondary pasty product (s) output (s).
  • FIG. 3 shows the distributor 1 of FIG. 1 in its entirety, and more particularly its sliding piston 43, the front sail 44 of which comprises a circular groove 45 which can fit the separator tube 11 and therefore allowing emptying of the distributor 1 not limited by this tube 11.
  • the depth of engagement of this groove is chosen so that the distribution stops before a total or partial lack of secondary product in the pasty cords delivered.
  • the lower end of the distributor is fixed to a flexible interlocking foot 46, the bottom 47 of which has an opening 48 for air passage.
  • the dispenser of the invention is used for the packaging of pasty products from the cosmetic, pharmaceutical, paramedical, hygienic and food fields, and in particular for the case where the products distributed will have to undergo a brewing work to be checked.
EP91420086A 1990-03-14 1991-03-12 Abgabevorrichtung für ein pastöses Produkt, das mit einer regulierbaren Menge eines sekundären pastösen Produktes gemischt wird, und ihre Benutzung Withdrawn EP0447335A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9003847A FR2659632B1 (fr) 1990-03-14 1990-03-14 Distributeur de produit pateux melange d'un produit pateux secondaire et son utilisation.
FR9003847 1990-03-14

Publications (1)

Publication Number Publication Date
EP0447335A1 true EP0447335A1 (de) 1991-09-18

Family

ID=9395123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420086A Withdrawn EP0447335A1 (de) 1990-03-14 1991-03-12 Abgabevorrichtung für ein pastöses Produkt, das mit einer regulierbaren Menge eines sekundären pastösen Produktes gemischt wird, und ihre Benutzung

Country Status (9)

Country Link
US (1) US5125539A (de)
EP (1) EP0447335A1 (de)
JP (1) JPH0592164A (de)
CA (1) CA2037094A1 (de)
FI (1) FI911244A (de)
FR (1) FR2659632B1 (de)
IS (1) IS3675A7 (de)
NO (1) NO910999L (de)
PT (1) PT97026A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751077A1 (de) * 1995-06-28 1997-01-02 GUALA S.p.A. Spender zur gleichzeitigen Ausgabe mindestens zweier pastöser Massen
EP0810160A2 (de) * 1996-05-29 1997-12-03 TER s.r.l. Spender für cremeförmige Substanz
WO2007055660A1 (en) * 2005-11-11 2007-05-18 Khai Min Hiew A container with separately sealed compartments holding separate substances, able to be mixed upon rupturing or opening of the seal separating the compartments
FR3028156A1 (fr) * 2014-11-10 2016-05-13 Oreal Dispositif de conditionnement et d'application d'un produit cosmetique

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4206524C2 (de) * 1992-03-02 1997-04-24 Andris Raimund Gmbh & Co Kg Dosierpumpe für zähflüssige, insbesondere pastenartige Stoffe
IT1256628B (it) * 1992-12-04 1995-12-12 Distributore di sostanze fluide, con testa deformabile
FR2704458B1 (fr) * 1993-04-28 1995-07-21 Oreal Ensemble de distribution de produit.
US5699934A (en) * 1996-01-29 1997-12-23 Universal Instruments Corporation Dispenser and method for dispensing viscous fluids
DE19604626A1 (de) * 1996-02-08 1997-08-14 Uhu Gmbh Klebstift mit kolbenförmiger Haltevorrichtung für die Stiftmasse
US5931352A (en) * 1997-09-11 1999-08-03 Knight Plastics, Inc. Snap-fit non-drip valve and method for assembly thereof
US5989469A (en) * 1997-09-11 1999-11-23 Knight Plastics, Inc. Method for making a non-drip valve for an inverted container
US5971232A (en) * 1998-06-03 1999-10-26 Aptargroup, Inc. Dispensing structure which has a pressure-openable valve retained with folding elements
FR2786467B1 (fr) * 1998-11-27 2001-02-02 Lir France Sa Dispositif de distribution de produits liquides, fluides ou pateux
US6290108B1 (en) 2000-04-14 2001-09-18 Seaquist Closures Foreign, Inc. Dispensing system with an internal releasable shipping seal and an extended tip containing a pressure openable valve
US6334555B1 (en) 2000-05-25 2002-01-01 Seaquist Closures Foreign, Inc. Fitment and resealable dispensing closure assembly for high-pressure sealing and bi-modal dispensing
US6446844B1 (en) 2001-12-18 2002-09-10 Seaquist Closures Foreign, Inc. Closure with internal flow control for a pressure openable valve in an extendable/retractable nozzle
ES2642042T3 (es) * 2006-04-21 2017-11-15 Toko Yakuhin Kogyo Kabushiki Kaisha Preparación pulverizable de tipo gel para adhesión a la piel/mucosa, y sistema de administración que usa la preparación
KR101370721B1 (ko) * 2006-04-21 2014-03-06 신코 케미칼 가부시키가이샤 유체용 용기 및 이를 이용한 에어리스식 유체 투여 시스템
US20090152294A1 (en) * 2007-12-12 2009-06-18 Mizell Jeffrey W Dual-Tube Product Container and Dispenser
FR2969935B1 (fr) 2011-01-03 2013-12-27 Cinqpats Conditionnement, distribution, application d'un contenu a consistance de liquide a pateux.
KR101378369B1 (ko) * 2011-06-14 2014-03-27 (주)연우 펌핑식 화장품용기
US9574921B2 (en) 2014-07-25 2017-02-21 Mezurware Llc Dispensing devices for dispensing precise doses of liquid
WO2021013962A1 (en) * 2019-07-23 2021-01-28 Rieke Packaging Systems Limited All-polymer pump dispenser with internal plug seal
US11279548B1 (en) * 2020-09-22 2022-03-22 Edgar Hugo Dispenser tube

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8802173U1 (de) * 1988-02-19 1989-07-13 Bramlage Gmbh, 2842 Lohne, De
EP0340724A2 (de) * 1988-04-30 1989-11-08 Tubex Vertrieb Gmbh Spender
EP0345458A2 (de) * 1988-06-04 1989-12-13 Tubex Vertrieb Gmbh Spender

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
FR2609967B1 (fr) * 1987-01-23 1989-08-04 Cebal Distributeur pour produit pateux a poussoir axial rotatif
NL8820369A (nl) * 1987-05-20 1989-04-03 Colgate Palmolive Co Doseerhouder voor produkten in pastavorm.
FR2621014B1 (fr) * 1987-09-25 1989-11-24 Cebal Distributeur de produit pateux a fonctionnement ameliore et element de pompage correspondant
DE68906701T2 (de) * 1988-03-28 1994-01-20 Oreal Vorrichtung zur Abgabe einer Mischung aus einer pastenartigen Substanz und mindestens einer zusätzlichen Substanz, insbesondere in Form eines gestreiften Stranges, und Abgabekopf einer solcher Vorrichtung.
DE3837704C2 (de) * 1988-11-07 1994-03-24 Andris Raimund Gmbh & Co Kg Pastenspender

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8802173U1 (de) * 1988-02-19 1989-07-13 Bramlage Gmbh, 2842 Lohne, De
EP0340724A2 (de) * 1988-04-30 1989-11-08 Tubex Vertrieb Gmbh Spender
EP0345458A2 (de) * 1988-06-04 1989-12-13 Tubex Vertrieb Gmbh Spender

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751077A1 (de) * 1995-06-28 1997-01-02 GUALA S.p.A. Spender zur gleichzeitigen Ausgabe mindestens zweier pastöser Massen
US5813573A (en) * 1995-06-28 1998-09-29 Guala S.P.A. Dispenser for the simultaneous delivery of at least two paste-like products
EP0810160A2 (de) * 1996-05-29 1997-12-03 TER s.r.l. Spender für cremeförmige Substanz
EP0810160A3 (de) * 1996-05-29 1998-08-12 TER s.r.l. Spender für cremeförmige Substanz
US5862955A (en) * 1996-05-29 1999-01-26 Ter S.R.L. Creamy substance dispenser having non-return valve
WO2007055660A1 (en) * 2005-11-11 2007-05-18 Khai Min Hiew A container with separately sealed compartments holding separate substances, able to be mixed upon rupturing or opening of the seal separating the compartments
FR3028156A1 (fr) * 2014-11-10 2016-05-13 Oreal Dispositif de conditionnement et d'application d'un produit cosmetique

Also Published As

Publication number Publication date
FI911244A (fi) 1991-09-15
NO910999D0 (no) 1991-03-13
JPH0592164A (ja) 1993-04-16
NO910999L (no) 1991-09-16
FR2659632A1 (fr) 1991-09-20
CA2037094A1 (fr) 1991-09-15
US5125539A (en) 1992-06-30
FI911244A0 (fi) 1991-03-13
FR2659632B1 (fr) 1992-10-16
PT97026A (pt) 1993-05-31
IS3675A7 (is) 1991-08-29

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