WO2018083366A1 - Capsule, système et procédé de préparation d'une boisson - Google Patents

Capsule, système et procédé de préparation d'une boisson Download PDF

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Publication number
WO2018083366A1
WO2018083366A1 PCT/ES2017/070735 ES2017070735W WO2018083366A1 WO 2018083366 A1 WO2018083366 A1 WO 2018083366A1 ES 2017070735 W ES2017070735 W ES 2017070735W WO 2018083366 A1 WO2018083366 A1 WO 2018083366A1
Authority
WO
WIPO (PCT)
Prior art keywords
capsule
base
sheet
cup
housing
Prior art date
Application number
PCT/ES2017/070735
Other languages
English (en)
Spanish (es)
Inventor
Segundo PATIÑO PATIÑO
Original Assignee
Patino Patino Segundo
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=60812086&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018083366(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Patino Patino Segundo filed Critical Patino Patino Segundo
Priority to ES17821668T priority Critical patent/ES2797202T3/es
Priority to EP17821668.5A priority patent/EP3536636B1/fr
Priority to MX2019004829A priority patent/MX2019004829A/es
Publication of WO2018083366A1 publication Critical patent/WO2018083366A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/8043—Packages adapted to allow liquid to pass through the contents

Definitions

  • the invention relates to a single dose capsule for the preparation of an infused or percolated beverage, such as coffee or tea; or soluble, such as chocolate or milk, in a machine for the preparation of the beverage.
  • the invention also relates to a system and a method for preparing a beverage by means of the capsule.
  • capsules are known for the preparation of a beverage provided with tearing means which are configured to, after injecting through a self-service machine a pressurized fluid, such as hot water, into the capsule through its upper part, tear the lower part of the capsule upon reaching the inside of the capsule a predetermined pressure level.
  • a pressurized fluid such as hot water
  • a capsule of this type which comprises a cup-shaped body constituted by a watertight material that stores a dose of a product for the preparation of the beverage, in which a superior mouthpiece is distinguished, closed by a first watertight sheet welded to said body and prepared to be traversed by an injector element of a pressurized fluid intended to dissolve or infuse the dose of product for the preparation of the beverage, and a lower opening arranged at its base, provided for the departure of the prepared beverage.
  • This capsule also comprises a second sealed sheet welded internally to the body, which separates the upper mouth and the lower mouth, leaving the dose of product stored in the body between the first and second sheet.
  • the capsule is also provided with means for tearing the second sheet, arranged integral to the base of the body under said second sheet. In this way, the high pressure of the fluid in the capsule causes a thrust on said second sheet that travels by elasticity until it comes into contact with the tearing means, at which time the breakage of said second sheet occurs, allowing said Drink flow out.
  • patent documents EP1472156 and EP1808382 also describe a capsule of this type, which comprises a closed chamber containing a dose of product and tearing opening means that allow the capsule to be opened at the time of use. and that allow said drink to flow out. The opening is achieved by the relative coupling of the opening means with a retaining sheet of the closed chamber. Similarly, said relative coupling is carried out under the effect of raising the fluid pressure in the chamber.
  • these capsules have the disadvantage that they require the fluid to be injected under pressure, delaying the preparation of the beverage until the predetermined pressure level is achieved inside the capsule.
  • Another drawback they present is that the capsule walls have to be sized to withstand the internal pressure, so it is necessary to use materials sufficiently rigid and thick enough, which increases the final cost of the capsule.
  • the capsule for the preparation of a beverage in a machine of the present invention is one comprising a body of a single piece of watertight material comprising a cup and a base, the cup being adapted to store at least one dose of a product for the preparation of the beverage and provided with an upper mouth, closed by a first sealed sheet, glued or welded to the cup and prepared to be traversed by an injector element of a fluid for the preparation of the beverage, and the base being provided with a lower mouthpiece, provided for the exit of the prepared beverage; the capsule being provided in addition to a second watertight sheet glued or welded internally to the cup, above the base, and separating the upper mouth and the lower mouth, leaving the dose of product stored between the first and second sheets; and the base being provided with means for tearing the second sheet.
  • the watertight materials must be interpreted as impervious to liquids, that is, the liquids cannot pass through it, specifically the water or liquid that is introduced into the capsule and the prepared beverage.
  • the capsule is characterized in that the cup and the base are joined by a flexible portion, said flexible portion being able to bend by pushing the base in the direction of the second sheet, keeping the cup held, allowing the movement of the means from tearing to tearing or breaking the second sheet.
  • the capsule is characterized in that the cup and the base are joined by a flexible portion, said flexible portion being able to bend by pushing the base in the direction of the second sheet, keeping the cup held, allowing the movement of the means from tearing to tearing or breaking the second sheet.
  • the beverage preparation machine that exerts the necessary pressure on the capsule to open it before injecting water into it, to prevent the capsule from accidentally opening before use
  • the cup and base are expected to be essentially rigid and only the flexible portion that joins them is flexible, it is also contemplated that part of the base or part of the cup or even the entire base or cup is flexible, so that the flexible portion would have no continuity solution.
  • the flexible portion has a thickness less than the thickness of the adjacent ends of the cup and the base that joins, said flexible portion acting as a joint, allowing that when exerting pressure on the base in the direction of the second sheet, it can approach the second sheet and the tearing means break or tear said second sheet.
  • the flexible portion may have combined sections of greater or lesser thickness, for example to achieve double or triple articulation.
  • the entire flexible portion has a thickness less than the thickness of the ends of the cup and the base that joins, since it has been found that a single joint is sufficient to tear the second sheet of the capsule.
  • the flexible portion has a minimum thickness of less than 50 micrometers, allowing its operation as a joint, especially when the flexible portion is made of polypropylene.
  • the flexible portion surrounds the base, enclosing it so that it is sufficient to exert pressure at any point of the base to tear the second sheet.
  • the second sheet is made of aluminum. This second sheet has a thickness greater than 10 micrometers and is adapted to withstand a pressure of up to 10 bar, that is, a pressure of up to 1 megapascal.
  • the base is provided with at least one lower support shoulder, which allows the capsule to be raised when it is introduced into the housing of a machine for the preparation of beverage.
  • the base In order for the pressure to be exerted on each lower projection to be correctly transmitted to the base, it is expected that the base be provided with at least three lower support projections, which determine a plane and allow the capsule to remain stable in the housing. So that the force exerted on each projection inferior to the base is correctly transmitted, in a variant of interest, three inferior support projections determine the vertices of an equilateral triangle.
  • the base is provided with at least six lower support projections that form the vertices of a hexagon, or seen another way, these six lower support projections that form the vertices of a hexagon also form the vertices of two triangles. equilateral, optimally distributing the force that will be exerted on these projections.
  • the tearing means comprise at least one drilling or cutting projection of the second sheet
  • these tearing means may be formed, for example made of plastic material by means of a mold, as part of the base, for example to be molded together with the capsule body, or they could be glued or welded later on the base, for example if the base is flexible and the tearing means, such as projections, are added after the body molding.
  • At least one drilling or cutting projection is aligned with a lower supporting projection, so that by exerting force on each lower supporting projection that is aligned with a drilling or cutting projection, the displacement that each one of these lower projections due to the force exerted will be transmitted directly to the drilling or cutting projection that is aligned. In this way, the displacement to the drilling or cutting projections is transmitted more efficiently, even if the capsule is decompensated, for example, if lower projections have been broken or these are partly defective and the second one would be broken or cut. sheet although not all the base could move.
  • the cup comprises an inner wall that surrounds and encloses the product dose, said inner wall being closed superiorly by a third permeable sheet, such as filter paper, thus allowing the preparation of beverages that require infusion or percolation without turbulence, such as coffee or tea.
  • a third permeable sheet such as filter paper
  • the capsule is devoid of inner wall and the third sheet is attached directly to the walls of the cup, or to a flange of said wall, leaving the dose of the product that requires infusion or percolation without turbulence, such as coffee or tea , between the second sheet and the third sheet, even when the capsule is not provided with an intermediate wall.
  • a system for preparing a beverage comprising a capsule and a machine for preparing a beverage by means of said capsule, the machine being provided with a housing for housing and retaining the capsule so that the capsule protrudes superiorly from said housing, and the machine also being provided with press means to close the housing superiorly and press the capsule against the bottom of said housing, so that the base of the capsule undergoes a thrust in the direction of the second sheet of the capsule allowing displacement of its tearing means, when the flexible portion of the capsule is folded, until the second sheet is torn or broken.
  • a method for preparing a beverage is also disclosed by means of this system comprising the steps of housing and retaining the capsule in a machine housing, so that the capsule protrudes superiorly from said housing, and superiorly closing the housing by means Press the machine, pressing the capsule that protrudes superiorly from the housing against the bottom of the housing, so that the base of the capsule undergoes a thrust in the direction of the second sheet of the capsule allowing the displacement of its tearing means, to the bend the flexible portion of the capsule until the second sheet is torn or broken.
  • Fig. 1 shows a front view of the body of the capsule object of the invention
  • Fig. 2 shows a bottom perspective view of the capsule body
  • Fig. 3 presents a top perspective view of the capsule body
  • Fig. 4 shows a top view of the capsule body
  • Fig. 5a presents a view of the capsule object of the invention invention
  • Fig. 5b shows a detail of the capsule of Fig. 5a
  • Figs. 6a and 6b present a sequence of placing the capsule of the present invention in a beverage preparation machine, before tearing the second sheet of the capsule; and Fig. 6c shows a further step in which the second sheet of the capsule is torn before preparing the beverage;
  • Fig. 7a presents a sectional view of the capsule and the machine in the sequence of Fig. 6b;
  • Fig. 7b shows a detail of Fig. 7a
  • Fig. 8a presents a sectional view of the capsule and the machine in the sequence of Fig. 6c;
  • Fig. 8b shows a detail of Fig. 8a; Y
  • Figs. 9 to 1 1 present another variant embodiment of the capsule.
  • Figs. 1, 2, 3 and 4 have different views of the body 2 that will be part of the capsule 1 object of the present invention.
  • the body 2 is formed by a single piece of sealed plastic material and comprises a cup 3 and a base 4 joined by a flexible portion 11.
  • This flexible portion 11 will allow the base 4 to be brought closer to the cup 3 , even if it is very lightly, when pressing base 4 against cup 3, as will be more detailed ahead.
  • this flexible portion 1 1 has a thickness less than the thickness of the ends of the cup 3 and the base 4 that joins, allowing the flexible portion 11 to act as a joint.
  • the cup 3 of the body 2 has truncated conical walls, the base 4 of the body 2 having a substantially concave shape.
  • the cup 3 is provided with an upper opening 6, which will be closed by a first sealed sheet 7 that will be glued or welded to the cup 3 and will be prepared to be pierced by a fluid injector element, such as water , for the preparation of the drink.
  • the base 4 is in turn provided with a lower mouth 8, intended for the exit of the prepared beverage and provided with a spout 15.
  • the cup 3 has a second sealed sheet 9 glued or welded internally to said cup 3, above the base 4, and that it will separate the upper mouth 6 and the lower mouth 8, so that the product dose 5 which will be contained in the capsule 1 is stored between the first sheet 7 and the second sheet 9.
  • the base 4 is provided with tearing means 10, by way of projections 12, of this the second sheet 9 which, as will be seen later, will allow the second sheet 9 to be torn or broken by bringing the base 4 closer to the cup 3.
  • the cup 3 of the body 2 also has an inner wall 13 that will surround and enclose the dose of product, said inner wall 13 being provided to be closed superiorly by a permeable third sheet 14.
  • Fig. 5a presents a sectional view of the capsule 1 of the present invention, closed and ready for use in a beverage preparation machine, such as one of the known single-dose or self-service machines, as will be illustrated. later.
  • the capsule 1 comprises the body 2 described above, as well as a first sealed sheet 7 glued or welded to the cup 3, for example, by means of a glue, which closes the upper mouth 6 of the cup 3, the first sheet 7 being prepared for be crossed by an injector element of a fluid for the preparation of the beverage.
  • the capsule 1 is also provided with a second sealed sheet 9 glued or welded internally to the cup 2, for example, by means of a glue, above the base 4, and which separates the upper mouth 6 and the lower mouth 8, with the dose 5 of product stored between the first sheet 7 and the second sheet 9, and housed on the second sheet 9.
  • the tearing means 10 of the second sheet 9 can also be observed are arranged in the base 4 so that the second sheet 9 can be broken or torn by bringing the base 4 closer to the cup 3.
  • the cup 3 and the base 4 of the body 2 are joined by a flexible portion 11, said flexible portion 1 being susceptible to bending when pushing the base 4 in the direction of the second sheet 9, for example when pressing the cup 3 against the base 4, allowing the displacement of the tearing means 10 to tear or break the second sheet 9, obtaining the opening d e the capsule 1 mechanically and thus preventing a subsequent injection of liquid inside the capsule 1 to increase the pressure inside the capsule 1, thus avoiding having to conform the body 2 of a material sufficiently resistant to avoid its explosion.
  • the body 2 can be manufactured from weaker and cheaper materials or with thicknesses smaller than the known capsule bodies that must withstand high pressures inside.
  • the cup 3 has an inner wall 13 that surrounds and encloses the dose 5 of the product, said inner wall 13 being closed superiorly by a permeable third sheet 14, such as a filter paper.
  • a permeable third sheet 14 such as a filter paper.
  • Fig. 5b shows a detail of the capsule 1 of Fig. 5a, in this detail you can see the flexible portion 1 1 that joins the cup 3 with the base 4 and allows, when flexing as an articulation, to bring the tearing means 10 until breaking or cutting the second sheet 9.
  • the flexible portion 11 that joins the ends of the cup 3 and the base is less than the thickness of the ends of cup 3 and base 4, thus allowing the flexible portion to act as a joint.
  • the flexible portion 11 surrounds the base 4 by joining all around the base 4 with the cup 3.
  • the base 4 and the cup 3 can also be joined by some rigid point, which do not prevent the capsule 1 from opening when pressing the base 4 against the cup.
  • the flexible section 1 1 has a smaller minimum thickness at 50 micrometers and form a crown or ring between cup 3 and base 4.
  • this second sheet 9 is made of aluminum and has a thickness greater than 10 micrometers that allows to withstand a pressure of up to 1 megapascal.
  • Figs. 6a, 6b and 6c present the steps to prepare a beverage by means of a system 100 formed by a capsule 1 and a machine 101 to prepare the beverage from the dose 5 of product stored in the capsule 1.
  • the procedure to prepare a beverage by said system 100 to prepare a beverage by comprising the steps of housing and retaining the capsule 1 in a housing 102, as illustrated in Fig. 6a.
  • the body 2 of the capsule 1 is sized so that the capsule protrudes superiorly from the housing 102.
  • Said housing 102 will be adapted to be inserted into the machine 101, as shown in Fig. 6b.
  • the housing 102 After inserting the housing 102 containing the capsule 1 in machine 101, the housing 102 will be closed superiorly by means of press means 103 of the machine 101, for example by operating the user a lever 105 arranged in the machine 101 for this purpose, so that the press means 103 press the capsule 1 against the bottom 104 of the housing 102.
  • the press means 103 will press the cup 3 of the capsule 1, so that the base 4 of the capsule will undergo a thrust in the direction of the second sheet 9 when its flexible portion 1 1 bends, allowing the displacement of the tearing means 10 of the capsule 1 until the second sheet is torn or broken 9.
  • the bottom 104 of the housing 102 is provided with an opening in which the spout 15 of the capsule 1 will be housed for the exit of the prepared beverage .
  • Fig. 7a presents a schematic sectional view of the system 100 in the position illustrated above in Fig. 6b, of which a detailed view of the flexible portion is shown in Fig. 7b.
  • the capsule 1 is inserted in the housing 102, but is sized so that it is not perfectly housed in said housing 102 but that it protrudes superiorly from the housing 102, even if it is very slightly, with the base 4 of the capsule touching bottom 104 of the housing.
  • the capsule 1 will have to protrude from the housing 102 at least the distance that the tearing means 10 have to travel to break or cut the second sheet 9.
  • this and the following schematic views no the dose 5 of product has been represented.
  • Fig. 8a presents a schematic sectional view of the system 100 in the position illustrated above in Fig. 6c, from which a detailed view of the flexible portion is shown in Fig. 8b.
  • the press means 103 of the machine 101 upperly close the housing 102, pressing the cup 3 of the capsule 1 against the bottom 104 of the housing 102, so that the base 4 of the capsule 1 undergoes a thrust in the direction to the second sheet 9 of the capsule allowing, when the flexible portion 11 bends, the displacement of the tearing means 10 from the base 4 until the second sheet 9 is torn or broken, so that the capsule 1 is opened inferiorly and when injected liquid the machine 101 inside the capsule 1, the beverage exits through the lower mouth 8 without the pressure rising inside the capsule 1.
  • the base 4 of the capsule 1 is provided with lower support projections 16, by way of legs.
  • the six projections 16 illustrated in the variant embodiment of Fig. 9 make it possible to ensure that the base 4 of the capsule 1 will be in contact with the bottom 104 of the housing 102 illustrated above and that it will also protrude sufficiently from the housing 102 to be able to tear the second sheet 9 when the press means 103 of the machine 101 are closed superiorly to the housing 102, in a manner similar to that described above.
  • Fig. 10 shows, in a schematic way, a detail of the base 4 of the capsule 1 of Fig. 9 in a bottom view, in which it can be seen that each group of three lower support projections 16 form the vertices of an equilateral triangle, also forming the six lower projections 16 supporting the vertices of a hexagon, allowing efficiently transmitting the displacement exerted on the projections 16 in the direction of the second sheet 9 to the entire base 4.
  • the drilling or cutting projections 12, such as the six projections 12 illustrated above in Fig. 4, are each aligned with a lower shoulder 16, so that the displacement exerted on each shoulder 16 in the direction of the second sheet 9, it is transmitted directly to the projection 12 which is aligned.
  • this alignment could also occur with other tearing means 10 that the capsule 1 may have, other than the projections 12.
  • this alignment between a projection 12 and a projection 16 can be seen in the detail of the section of the capsule 1 shown in Fig. 1 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)
  • Packages (AREA)

Abstract

L'invention concerne une capsule (1) pour la préparation d'une boisson et un système (100) et un procédé pour la préparation d'une boisson au moyen de ladite capsule, ladite capsule comprenant un corps (2) en une seule pièce de matériau étanche qui comprend une coupe (3) et une base (4), ladite coupe étant pourvue d'une ouverture supérieure (6) fermée par une première feuille (7) et ladite capsule étant pourvue d'une seconde feuille (9) étanche collée à l'intérieur de la coupe, sur le dessus de la base. La base est pourvue de moyens de déchirement (10) de la seconde feuille, ladite coupe et ladite base étant reliées par une partie souple (11), ladite partie souple étant susceptible d'être doublée lors de la poussée de la base en direction de la seconde feuille, permettant le déplacement des moyens de déchirement jusqu'à déchirer ou rompre la seconde feuille.
PCT/ES2017/070735 2016-11-07 2017-11-07 Capsule, système et procédé de préparation d'une boisson WO2018083366A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES17821668T ES2797202T3 (es) 2016-11-07 2017-11-07 Cápsula, sistema y procedimiento para la preparación de una bebida
EP17821668.5A EP3536636B1 (fr) 2016-11-07 2017-11-07 Capsule, systeme et methode pour la production des boissons
MX2019004829A MX2019004829A (es) 2016-11-07 2017-11-07 Capsula, sistema y procedimiento para la preparacion de una bebida.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201631416 2016-11-07
ESP201631416 2016-11-07

Publications (1)

Publication Number Publication Date
WO2018083366A1 true WO2018083366A1 (fr) 2018-05-11

Family

ID=60812086

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2017/070735 WO2018083366A1 (fr) 2016-11-07 2017-11-07 Capsule, système et procédé de préparation d'une boisson

Country Status (4)

Country Link
EP (1) EP3536636B1 (fr)
ES (1) ES2797202T3 (fr)
MX (1) MX2019004829A (fr)
WO (1) WO2018083366A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1472156A2 (fr) 2002-01-16 2004-11-03 Societe Des Produits Nestle S.A. Capsule fermee pourvue d'un moyen d'ouverture
WO2007141202A1 (fr) * 2006-06-06 2007-12-13 Nestec S.A. Capsule avec dégouttement réduit
EP2238050A1 (fr) 2008-02-06 2010-10-13 Nestec S.A. Capsule à labyrinthe pour boisson en poudre
WO2010137947A1 (fr) * 2009-06-17 2010-12-02 Sara Lee/De N.V. Système, capsule et procédé pour préparer une quantité prédéterminée de boisson
WO2013124811A1 (fr) * 2012-02-22 2013-08-29 Sarong Societa' Per Azioni Capsule pour boisson
WO2016102736A2 (fr) * 2014-12-26 2016-06-30 Fast Eurocafe S.A. Capsules et système pour la préparation de boissons avec moyens d'ouverture actionnables

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010038213A2 (fr) 2008-10-03 2010-04-08 Ethical Coffee Company Sa Capsule pour la preparation d'une boisson et dispositif
ITVI20110079A1 (it) 2011-04-04 2012-10-05 Taplast Srl Capsula per la preparazione di bevande e metodo di preparazione di bevande che utilizza tale capsula
ITTO20120899A1 (it) 2012-10-15 2013-01-14 Bisio Progetti Spa Capsula per la preparazione di bevande ad infusione.
CH711328A2 (de) 2015-07-14 2017-01-31 Delica Ag Kapsel mit einem vorzugsweise rotationssymmetrisch ausgebildeten Kapselkörper.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1472156A2 (fr) 2002-01-16 2004-11-03 Societe Des Produits Nestle S.A. Capsule fermee pourvue d'un moyen d'ouverture
EP1808382A1 (fr) 2002-01-16 2007-07-18 Societe Des Produits Nestle S.A. Capsule fermée avec une coupelle comportant un système d'ouverture
WO2007141202A1 (fr) * 2006-06-06 2007-12-13 Nestec S.A. Capsule avec dégouttement réduit
EP2238050A1 (fr) 2008-02-06 2010-10-13 Nestec S.A. Capsule à labyrinthe pour boisson en poudre
WO2010137947A1 (fr) * 2009-06-17 2010-12-02 Sara Lee/De N.V. Système, capsule et procédé pour préparer une quantité prédéterminée de boisson
WO2013124811A1 (fr) * 2012-02-22 2013-08-29 Sarong Societa' Per Azioni Capsule pour boisson
WO2016102736A2 (fr) * 2014-12-26 2016-06-30 Fast Eurocafe S.A. Capsules et système pour la préparation de boissons avec moyens d'ouverture actionnables

Also Published As

Publication number Publication date
EP3536636A1 (fr) 2019-09-11
MX2019004829A (es) 2019-06-20
EP3536636B1 (fr) 2020-03-25
ES2797202T3 (es) 2020-12-01

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