ES2643854B1 - PROCEDURE FOR OBTAINING A CONCRETE PANEL AND PANEL OBTAINED - Google Patents
PROCEDURE FOR OBTAINING A CONCRETE PANEL AND PANEL OBTAINED Download PDFInfo
- Publication number
- ES2643854B1 ES2643854B1 ES201630667A ES201630667A ES2643854B1 ES 2643854 B1 ES2643854 B1 ES 2643854B1 ES 201630667 A ES201630667 A ES 201630667A ES 201630667 A ES201630667 A ES 201630667A ES 2643854 B1 ES2643854 B1 ES 2643854B1
- Authority
- ES
- Spain
- Prior art keywords
- panel
- layer
- resin
- mesh
- fiberglass
- 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- Withdrawn - After Issue
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/28—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Procedimiento para la obtención de un panel de hormigón y panel obtenido, que se elabora sobre un molde en el cual se fabrica un panel de GRC y sobre éste, una vez ha curado, se aplica una primera capa de resina, para posteriormente poner una malla de fibra de vidrio sobre dicha capa de resina, y compactar la malla de fibra de vidrio mediante la aplicación de unos rodillos, y se seguidamente se vuelve a aplicar otra capa de resina sobre la malla de fibra, volviendo a aplicar los rodillos descritos anteriormente con el objeto de que las capas de resina y la malla de fibra de vidrio se adherían al panel y se fundan entre sí, conformando un solo elemento. Finalmente, una vez han secado las capas de resina, se aplica una capa de cemento pulverizado o proyectado sobre éstas con el objeto de aislar el panel de elementos exteriores.Procedure for obtaining a concrete panel and obtained panel, which is made on a mold in which a GRC panel is manufactured and on it, once it has cured, a first layer of resin is applied, to later put a mesh of fiberglass on said resin layer, and compacting the fiberglass mesh by applying rollers, and then another resin layer is reapplied on the fiber mesh, reapplying the rollers described above with in order that the resin layers and the fiberglass mesh adhered to the panel and melted together, forming a single element. Finally, once the resin layers have dried, a layer of pulverized or sprayed cement is applied over them in order to insulate the panel from external elements.
Description
55
1010
15fifteen
20twenty
2525
DESCRIPCIÓNDESCRIPTION
PROCEDIMIENTO PARA LA OBTENCIÓN DE UN PANEL DE HORMIGÓN Y PANEL OBTENIDO.PROCEDURE FOR OBTAINING A CONCRETE PANEL AND PANEL OBTAINED.
- OBJETO DE OBJECT OF
- LA INVENCIÓN THE INVENTION
- La invención, tal como expresa el The invention, as expressed by the
- enunciado enunciated
- de la presente memoria descriptiva, se of the present specification,
- refiere refer
- a la obtención y al procedimiento de to obtain and to the procedure of
elaboración y producción de un panel de hormigón y panel obtenido a partir de un panel de GRC (Glass Reinforced Concrete) con unas aplicaciones de capas de resina y malla(s) de fibra de vidrio junto con una capa final de cemento, aportando al estado de la técnica varias ventajas y características de novedad, que se describirán en detalle más adelante, que suponen una destacable mejora frente a otros productos actualmente conocidos.development and production of a concrete panel and panel obtained from a GRC (Glass Reinforced Concrete) panel with applications of resin layers and fiberglass mesh (s) together with a final cement layer, contributing to the state Several advantages and novelty characteristics of the technique, which will be described in detail below, which represent a remarkable improvement over other products currently known.
Más en particular, el objeto de la invención se centra en un procedimiento y la aportación de materiales para la producción o elaboración de un panel de hormigón y panel obtenido a partir de un panel de GRC, sobre el que, de manera innovadora, se aplicarán capas de resina y malla(s) de fibra de vidrio y una capa final de cemento, consiguiendo un panel de hormigón con unas propiedades únicas y diferentes a los conocidos enMore particularly, the object of the invention focuses on a process and the provision of materials for the production or production of a concrete panel and panel obtained from a GRC panel, on which, in an innovative way, they will be applied layers of resin and fiberglass mesh (s) and a final layer of cement, achieving a concrete panel with unique and different properties to those known in
55
1010
15fifteen
20twenty
2525
3030
el mercado, respecto a su relación grosor y tamaño, y con la posibilidad de realizar infinidad de formas geométricas, pues con un panel convencional de GRC no serían posibles de realizar, todo ello con el ahorro de materiales y peso del panel.the market, in relation to its thickness and size relationship, and with the possibility of making infinite geometric shapes, since with a conventional GRC panel they would not be possible to do, all with the saving of materials and weight of the panel.
CAMPO DE APLICACIÓN DE LA INVENCIÓNFIELD OF APPLICATION OF THE INVENTION
El campo de aplicación de la presente invención se enmarca dentro del sector de la construcción, concretamente en el ámbito de la producción de paneles de hormigón reforzados con fibra de vidrio a partir de elementosThe field of application of the present invention is part of the construction sector, specifically in the field of production of fiberglass reinforced concrete panels from elements
prefabricados.prefabricated
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
En la actualidad, y como referencia al estado de la técnica, cabe señalar que sonAt present, and as a reference to the state of the art, it should be noted that they are
ampliamente conocidos y utilizados en el mercado paneles prefabricados en el sector de la construcción.widely known and used in the market prefabricated panels in the construction sector.
Por otra parte, existen en el mercado los paneles prefabricados de GRC destinados al fin que aquí concierne, sin embargo, ninguno de ellos utiliza este tipo de combinación de materiales en un panel GRC ni el procedimiento de producción del mismo.On the other hand, there are on the market the prefabricated GRC panels intended for the purpose that concerns here, however, none of them uses this type of combination of materials in a GRC panel or the production process thereof.
55
1010
15fifteen
20twenty
2525
3030
Es pues, el objetivo de la presente invención aportar al estado de la técnica un nuevo producto de panel de hormigón y panel obtenido a partir de un panel de GRC con la incorporación de otros materiales y su procedimiento de producción, convirtiéndolo en un panel novedoso.It is therefore the objective of the present invention to provide the state of the art with a new product of concrete panel and panel obtained from a GRC panel with the incorporation of other materials and its production process, making it a novel panel.
Debe mencionarse, por otra parte, que el solicitante desconoce la existencia de ninguna otra invención que presente un panel con dichos elementos o materiales, estando los detalles caracterizadores que los distinguen adecuadamente recogidos en las reivindicaciones finales que acompañan a la presente memoria descriptiva.It should be mentioned, on the other hand, that the applicant is unaware of the existence of any other invention that presents a panel with said elements or materials, the characterizing details that distinguish them adequately included in the final claims accompanying the present specification.
EXPLICACION DE LA INVENCIONEXPLANATION OF THE INVENTION
Así, el procedimiento para la obtención de un panel de hormigón, a partir de un panel de GRC junto con la aplicación de varias capas de resina y una o varias mallas de fibra de vidrio, según la resistencia y propiedades que se quieran obtener, y la aplicación de una capa final de cemento, así como la forma de su producción se configuran como una destacable novedad dentro de su campo de aplicación, ya que a tenor de su implicación se alcanzan los objetivos anteriormente señalados, estando los detalles caracterizadoresThus, the procedure for obtaining a concrete panel, from a GRC panel together with the application of several layers of resin and one or several fiberglass meshes, depending on the strength and properties that are to be obtained, and The application of a final layer of cement, as well as the form of its production are configured as a remarkable novelty within its field of application, since according to its implication the aforementioned objectives are achieved, the details being characteristic
55
1010
15fifteen
20twenty
2525
3030
que lo hacen posible y lo distinguen de lo ya conocido adecuadamente recogidos en las reivindicaciones finales que acompañan a la presente memoria descriptiva.which make it possible and distinguish it from what is already well known in the final claims that accompany the present specification.
De forma concreta, lo que la invención propone, como ya se ha apuntado anteriormente, es el desarrollo de un procedimiento para la fabricación y obtención de un panel de hormigón, a partir de un panel GRC en combinación con varias capas de resina y malla(s) de fibra de vidrio y una aplicación final de cemento.Specifically, what the invention proposes, as noted above, is the development of a process for the manufacture and obtaining of a concrete panel, from a GRC panel in combination with several layers of resin and mesh ( s) fiberglass and a final cement application.
La malla de fibra de vidrio tendrá que tener un peso o gramaje determinados para obtener las resistencias y propiedades que se requieran del panel y la resina deberá tener unas propiedades y características idóneas para su aplicación en la fibra de vidrio y adhesión o fundición con el panel de GRC.The fiberglass mesh will have to have a certain weight or weight to obtain the strengths and properties that are required of the panel and the resin must have properties and characteristics suitable for application in the fiberglass and adhesion or casting with the panel of GRC.
A partir de dichos pasos previos, la elaboración del panel se llevará a cabo de la forma siguiente:From these previous steps, the elaboration of the panel will be carried out as follows:
- Se comienza It starts
- por la elaboración de un for the elaboration of a
- molde (1) mold (1)
- que tendrá el grosor y which will be thick and
- dimensiones necesidad. dimensions need.
- deseados, según cada desired, according to each
55
1010
15fifteen
20twenty
2525
3030
- Una vez tenemos el molde, se procede a producir el panel de GRC (2).- Once we have the mold, we proceed to produce the GRC panel (2).
- Seguidamente, una vez el panel de GRC (2) ha curado, se procede a aplicar una capa de resina (3) sobre el mismo, mediante la utilización de brochas o rodillos diseñados para la aplicación de resinas.- Then, once the GRC panel (2) has cured, a layer of resin (3) is applied to it, using brushes or rollers designed for the application of resins.
- Seguidamente, se pone una malla de fibra- Next, a fiber mesh is put on
de vidrio (4) sobre la capa de resina (3) y se procede a tensar la misma para posteriormente cortar la malla en los orificios de los casquillos roscados del panel GRC para dejarlos libres y que se puedan enroscar los anclajesof glass (4) on the resin layer (3) and it is then tensioned to later cut the mesh in the holes of the threaded bushings of the GRC panel to free them and that the anchors can be screwed
correspondientes para su instalación. Al mismo tiempo, se procede a compactar y fundir la malla de fibra de vidrio (4) con la capa de resina (3) mediante la aplicación de unos rodillos sobre ambas, consiguiendo este objetivo y la expulsión de las burbujas de aire que se puedan generar en este proceso. Una vez se han realizado los trabajos descritos anteriormente, se procede a aplicar una nueva capa de resina (5) sobre la malla de fibra de vidrio (4) volviendo a aplicar los rodillos descritoscorresponding for installation. At the same time, we proceed to compact and melt the fiberglass mesh (4) with the resin layer (3) by applying rollers on both, achieving this objective and the expulsion of air bubbles that can be generate in this process. Once the work described above has been carried out, a new resin layer (5) is applied to the fiberglass mesh (4) by reapplying the described rollers
55
1010
15fifteen
20twenty
2525
3030
anteriormente con el objeto de que las capas de resina y la malla de fibra de vidrio se adherían al panel y se fundan entre sí, conformando un solo elemento.previously in order that the resin layers and the fiberglass mesh adhered to the panel and melted together, forming a single element.
- Una vez han secado y endurecido las capas de resina, se procede a aplicar una capa de cemento (6) sobre las mismas mediante el método de proyección o pulverización con el objeto de asilar la malla de fibra de vidrio y las capas de resina de elementos exteriores.- Once the resin layers have dried and hardened, a cement layer (6) is applied to them by the spraying or spraying method in order to insulate the fiberglass mesh and the resin layers of exterior elements
Visto lo que antecede, se constata que el descrito procedimiento para la obtención de un panel de hormigón a partir de un panel de GRC y en combinación con otros materiales y el panel obtenido representan una innovación de características estructurales y constitutivas desconocidas hasta ahora en su campo de aplicación, razones que unidas a su utilidad práctica, la dotan de fundamento suficiente para obtener el privilegio de exclusividad que se solicita.In view of the foregoing, it is found that the described procedure for obtaining a concrete panel from a GRC panel and in combination with other materials and the panel obtained represent an innovation of structural and constitutive characteristics unknown until now in its field of application, reasons that together with its practical utility, provide it with sufficient grounds to obtain the privilege of exclusivity that is requested.
DESCRIPCION DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS
Para completar la descripción que se está realizando del procedimiento objeto de la invención, y para ayudar a una mejor compresión deTo complete the description that is being made of the process object of the invention, and to help a better compression of
55
1010
15fifteen
20twenty
2525
3030
las características que la distinguen, se acompaña a la presente memoria descriptiva, como parte integrante de la misma, de un juego de planos, en los que con carácter ilustrativo y no limitativo se ha representado lo siguiente:the characteristics that distinguish it are accompanied by the present descriptive report, as an integral part thereof, of a set of drawings, in which the following has been represented as an illustrative and non-limiting nature:
La figura número 1.- Muestra una vista en sección de un ejemplo del panel de hormigón obtenido a partir del procedimiento y de los materiales objeto de la invención, apreciándose en dicha figura los elementos que lo integran.Figure number 1.- Shows a sectional view of an example of the concrete panel obtained from the process and of the materials object of the invention, showing in said figure the elements that comprise it.
REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION
A la vista de la descrita figura número 1 y única, y de acuerdo con la numeración adoptada en ella se puede apreciar como el panel de hormigón en cuestión, representado en dicha figura sobre el molde (1) que se utiliza para su elaboración, comprende un panel de GRC (2) con una primera capa de resina (3), una malla de fibra de vidrio (4), una segunda aplicación de una capa de resina sobre la malla de fibra de vidrio (5) y una aplicación de una capa de cemento (6).In view of the described figure 1 and only, and according to the numbering adopted therein, it can be seen how the concrete panel in question, represented in said figure on the mold (1) used for its preparation, comprises a GRC panel (2) with a first resin layer (3), a fiberglass mesh (4), a second application of a resin layer on the fiberglass mesh (5) and an application of a cement layer (6).
Descrita suficientemente la naturaleza de la presente invención, así como la manera de ponerla en práctica, no se considera necesario hacer más extensa su explicación para que cualquier experto en la materia comprenda su alcance y lasDescribing sufficiently the nature of the present invention, as well as the way of putting it into practice, it is not considered necessary to extend its explanation so that any person skilled in the art understands its scope and
5 ventajas que de ella se derivan, haciéndose constar que, dentro de su esencialidad, podrá ser llevada a la práctica en otras formas de realización que difieren en detalle de la indicada a título de ejemplo, y a las cuales alcanzará igualmente la 10 protección que se recaba siempre que no se altere, cambie o modifique su principio fundamental.5 advantages that derive from it, stating that, within its essentiality, it can be implemented in other embodiments that differ in detail from that indicated by way of example, and which will also achieve the protection It always requires that its fundamental principle is not altered, changed or modified.
Una de las ventajas de dicho panel es la posibilidad de incorporar diferentes terminaciones 15 en su cara vista y la de reproducir diferentes formas geométricas (paneles con vuelta, curva, etc.), así como de colores.One of the advantages of said panel is the possibility of incorporating different terminations 15 in its visible face and of reproducing different geometric shapes (panels with turn, curve, etc.), as well as colors.
Claims (1)
- panel de panel
- GRC (2) elaborado en un molde (1) , que GRC (2) made in a mold (1), which
- incorpora incorporates
- una primera capa de resina (3) más una a first layer of resin (3) plus a
- 15 malla de 15 mesh
- fibra de vidrio (4 puesta sobre la fiberglass (4 put on the
- primera capa first layer
- de resina, y la aplicación de una of resin, and the application of a
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201630667A ES2643854B1 (en) | 2016-05-24 | 2016-05-24 | PROCEDURE FOR OBTAINING A CONCRETE PANEL AND PANEL OBTAINED |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201630667A ES2643854B1 (en) | 2016-05-24 | 2016-05-24 | PROCEDURE FOR OBTAINING A CONCRETE PANEL AND PANEL OBTAINED |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2643854A1 ES2643854A1 (en) | 2017-11-24 |
ES2643854B1 true ES2643854B1 (en) | 2018-09-13 |
Family
ID=60331720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES201630667A Withdrawn - After Issue ES2643854B1 (en) | 2016-05-24 | 2016-05-24 | PROCEDURE FOR OBTAINING A CONCRETE PANEL AND PANEL OBTAINED |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2643854B1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT388013B (en) * | 1986-07-08 | 1989-04-25 | Leis Rudolf | Composite body |
JPH06114980A (en) * | 1992-09-30 | 1994-04-26 | Fukui Giyomou Kk | High strength panel and production thereof |
WO1999016984A1 (en) * | 1997-09-26 | 1999-04-08 | Ibiden Co., Ltd. | Composite refractory building material, method of manufacturing the same, gypsum board, and resin composition |
WO2004063486A1 (en) * | 2003-01-16 | 2004-07-29 | Shenyang Jianbaoli New Building Material Co., Ltd | New type building exterior panel, process and apparatus for making the same |
JP3167956U (en) * | 2011-03-07 | 2011-05-26 | カナフレックスコーポレーション株式会社 | Decorative lightweight panels |
-
2016
- 2016-05-24 ES ES201630667A patent/ES2643854B1/en not_active Withdrawn - After Issue
Also Published As
Publication number | Publication date |
---|---|
ES2643854A1 (en) | 2017-11-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016209377A8 (en) | Composite concrete pallet | |
DE602006012982D1 (en) | SELF-HEALING STRUCTURE | |
JP2013530271A5 (en) | ||
ES2643854B1 (en) | PROCEDURE FOR OBTAINING A CONCRETE PANEL AND PANEL OBTAINED | |
CN107806006B (en) | Raw bamboo-concrete combined bridge and manufacturing method thereof | |
RU2013155923A (en) | STRUCTURED ABRASIVE PRODUCTS AND METHOD FOR PRODUCING THEM | |
CN107601965A (en) | A kind of color sand acoustic board and preparation method thereof | |
CN204728570U (en) | A kind of latch assembly and exterior-wall heat insulation integrated board | |
WO2012020155A1 (en) | Method for producing a thin multi-sheet slab of natural stone | |
CN209163140U (en) | Combined wall board and 3D printing composite wallboard structure | |
ES2404232B1 (en) | PROCEDURE FOR OBTAINING AN ECOLOGICAL SANDWICH PANEL FROM RECYCLED MATERIALS AND PANEL OBTAINED. | |
EP4029897A4 (en) | Epoxy resin composition, resin cured product, fiber-reinforced composite material, and production methods therefor | |
ES2396111B1 (en) | MANUFACTURING PROCEDURE OF AN INSULATING NATURAL STONE PANEL AND PANEL OBTAINED WITH SUCH PROCEDURE | |
KR20030031045A (en) | the block of double-construction and manufacturing process | |
EA023958B1 (en) | Reinforcement mesh made of composite material | |
KR20110022843A (en) | The pavement block on the knockdown plan with ethylene prophlene diene monomer | |
KR20070091757A (en) | Decoration molding and method for manufacturing the same | |
CN2563214Y (en) | Composite thermal insulation wall board | |
ES2939908A1 (en) | DECORATIVE PANEL AND ASSOCIATED MANUFACTURING METHOD (Machine-translation by Google Translate, not legally binding) | |
CN104772809A (en) | Method for making integral product by using wood and bamboo as raw material | |
KR100585385B1 (en) | An Enhanced FRP Mold Structure | |
CN201735143U (en) | Glass fiber reinforced plastic ping-pong table and basket ball board | |
RU2715833C2 (en) | Method of producing composition based on polycarbonate and epoxy resin | |
CN206045322U (en) | A kind of environmentally friendly table tennis table | |
CN207330770U (en) | A kind of color sand acoustic board |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
Ref document number: 2643854 Country of ref document: ES Kind code of ref document: B1 Effective date: 20180913 |
|
FA2A | Application withdrawn |
Effective date: 20190228 |