EP2040576B1 - Individually formed footwear - Google Patents
Individually formed footwear Download PDFInfo
- Publication number
- EP2040576B1 EP2040576B1 EP06778483.5A EP06778483A EP2040576B1 EP 2040576 B1 EP2040576 B1 EP 2040576B1 EP 06778483 A EP06778483 A EP 06778483A EP 2040576 B1 EP2040576 B1 EP 2040576B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insole
- layer
- foot
- client
- shoe
- 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.)
- Active
Links
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/28—Adapting the inner sole or the side of the upper of the shoe to the sole of the foot
Definitions
- the current invention generally relates to footwear.
- the invention concerns personalized shoes and insoles.
- Foot motion/gait problems reflect to soles, ankles, knees, hips, back, etc; that is why their treatment and prevention is particularly beneficial to the whole human well-being.
- An individual takes around 15 000-16 000 steps every day.
- the load on feet in sports is many times the weight of the body. For example, the ground force is about three times one's body weight while running and 7.5 times while playing basketball due to jumps and other irregular moves. Provided that the foot position is correct, the load divides evenly between the upper joints.
- pronation refers to inward (i.e. medial) roll of the foot (especially heel and arch), which turns into overpronation when the foot rolls too much. In contrast, oversupination is caused by too small inward roll. Both conditions easily cause pain, wear and even stress injuries in the feet and various body joints.
- Different (arch) support insoles are available for correcting the foot position. They have been designed to support longitudinal medial and lateral arch but without separately glued wedges they do not actually correct foot position. Wedging is a time-consuming and expensive process. The obtained result depends on the person doing the task and still tends to be rather inaccurate. As another drawback, after gluing the wedges to the soles one cannot take a new mold without first removing the wedges.
- JP H10 99103 A discloses an insole, comprising a first layer reaching out from under the heel to a toe area of the foot, and a second layer made of thermoplastic material which can become plastic when heated.
- an insole for a shoe which insole comprises the features of claim 1.
- a shoe comprises the features of claim 7.
- An insole or a shoe that is to be subjected to a shaping (or actually reshaping as it inherently has some kind of basic form after manufacturing) procedure of the invention for correcting the foot position is hereinafter called a preform.
- a method of producing an individually formed insole includes:
- a method of producing an individually formed shoe includes the following steps:
- a method for providing individually formed footwear to a client comprises:
- the utility of the invention arises from a number of issues.
- the individually formed shoe or insole provides natural arch support and divides the ground force more evenly through the foot, knee, hip, and the back.
- it reduces ovepronation or oversupination and realigns the gait. This affects positively to the body posture and alleviates fatigue, sprained ankles, rubbing and pain.
- the invention further stabilizes the foot, adds lateral support of the foot and strengthens it to reduce loss in muscle power.
- the transverse arch is supported when the thermoplastic layer extends under it.
- the shoes/insoles can be offered through common retail stores, e.g. sport or shoe stores, and the required customisation process by a trained sales clerk takes only minutes.
- the sales spot consumes only a minor space (few square meters) and compulsory investments in equipment can be kept low.
- Provision of customized insoles cultivates the pro image emanating from the retailer and offers a promotional value in relation to other products as well; it attracts people to visit the store and raises the sales figures of related products (shoes/insoles, socks, etc) respectively.
- the profit margin can be kept high while the retail price is still considerably lower than with its prior art antecessors.
- a preform (-blanket) insole has at least one layer, which is made of thermoplastic and reaches out at least from under the heel to under the plantar arch of the target person's, hereinafter client, foot.
- client target person's
- two or three material layers that are connected together are used in the perform insole for the comfort of the client.
- the upper layer (if used) of the preform insole is placed against the foot and the lower layer is placed against the shoe. Materials of these two layers can be selected among any prior art materials used in insoles.
- the lower layer may be constructed from a known material such as Rheluflex (trademark of Rhenoflex GmbH Ltd) comprising non-woven polyester as a carrier, ionomerresin-ethylvinylacetate blend as an extruded core, and EVA-Hotmelt as an adhesive.
- Rheluflex trademark of Rhenoflex GmbH Ltd
- the middle layer of the insole (in case of three layers) is made of thermoplastic.
- the used thermoplastic is selected from the group of known thermoplastics mentioned in claim 1.
- the critical value is the temperature, so-called glass transition temperature, where the thermoplastic becomes plastic and on the other hand turns back to solid form when the temperature is decreasing after shaping the insole. This temperature should not generally be so high that the insole feels uncomfortable against the client's foot. Notwithstanding a high glass transition temperature, a thermoplastic is still applicable if it can be cooled down enough prior to placing in contact with the foot provided that the thermoplastic remains plastic, i.e. mouldable. Adequate temperature for the thermoplastic to become plastic is somewhere under 95 °C and above 45 °C. Advantageously the range is from 50 °C to 85 °C.
- thermoplastic polyesters A-PET (Amorphous polyester terephthalate) and PETG (glycol-modified polyethylene terephthalate, which is a copolyester. Also ABS (acrylonitrile butadiene styrene), PVC (polyvinyl chloride) can be used.
- Thickness of the thermoplastic layer shall be preferably selected so as to provide reasonable support to the client's foot when the layer is in a rigid state.
- the thickness may also vary throughout the layer, if e.g. more flexibility is desired under the toe area (thinner) than the plantar arch area (thicker). Other characteristic required for the thermoplastic dictates that it should be rigid under the melting temperature.
- the middle layer 104 (or the only layer) made of thermoplastic can cover laterally the whole area of the insole.
- the layer 112 covers laterally only a part of the insole. In that option it is necessary that the thermoplastic reaches out lengthwise at least under the heel to under the plantar arch and in lateral direction advantageously almost to the whole width of the insole.
- the thermoplastic layer is designed so as to reach out from under the heel to the metatarsophalangeal joint of the foot so that transverse arch can be supported.
- a precut pad can be placed under the transverse arch when the insole is shaped to lift the transverse arch into the optimum position.
- the toe area of the insole should remain without the hard thermoplastic to enable natural movement of the foot during walking or running.
- One aspect relates to producing a preform of an insole that is ready in one piece (thus possibly having separate layers that are connected together with adhesive or such) and easy to heat over the glass transition temperature of the included thermoplastic.
- the insole is preferably rigid one-piece structure that corrects the foot position and supports the foot, especially the plantar arch and transverse arch thereof.
- the plantar arch can be adjusted to a proper high position by pulling the client's toe up and/or by lifting his/her heel up while keeping the toes against a support surface (Windlass effect).
- the adjustments can be carried out on a soft pad with or without further manual guiding. Alternatively, a trained person may reach a decent result just by hands without a supporting surface.
- a shoe can be provided, said shoe having a sole, which can be shaped according to client's foot for correcting the incorrect position thereof.
- the shoe in this case shall have at least one material layer of thermoplastic.
- the shoe is advantageously manufactured to include all necessary layers and is just personalized upon purchase. Suitable shoes include, for example, various types of walking shoes, sport shoes, boots, sandals and soft gym shoes.
- the sole is advantageously at least a two-piece structure including a thermoplastic layer either situated on top of the sole material or being integrated, for example embedded, within it.
- the one or more sole layers excluding the thermoplastic layer may comprise e.g. EVA (ethylvinylacetate) or other prior art materials; e.g.
- thermoplastic layer can be smaller in lateral direction than the whole sole. It is essential that the thermoplastic layer reaches out from under the heel to the metatarsophalangeal joint of the foot the same way as with the insole.
- the thermoplastic material are selected the same way as with the insole. It may be advantageous to make at least the outer surface of the sole of some wear resistant and good friction characteristics-having material.
- viscoelastic foam or other material which may also be thermosensitive, can be used within the shoe, whereby the shoe internals also reshape in addition to mere insole and provide additional comfort/support. With this embodiment can be assured very comfortable personalised shoe that supports tightly the bone structure of the feet and ankle. This is very important if the client has a for example diabetes or rheumatism and the shoe shouldn't cause any friction or abnormal pressure to the foot.
- footwear such as shoes (walking, sports, discipline-specific, etc), skates, ski boots, etc can be offered with preinstalled insoles in accordance with the invention, which insoles shall be then personalized before use.
- the layers inside the shoe that receive the insole of the invention shall advantageously conform to the insole shapes.
- viscoelastic foam or other material that is optionally thermosensitive can be used within the shoe, whereby the shoe internals also reshape in addition to mere insole.
- Figure 2 discloses a flow diagram, by way of example only, of the method for providing individually formed insoles to a client by a retailer.
- the insoles may be provided as such or with shoes that may even include the insoles of the invention by default.
- shoes including a mouldable sole of the invention can be offered via the method presented hereinafter.
- the concept makes it possible to finalize customised insoles only a few minutes after receiving the assignment.
- the insoles of the invention can be provided to the retailers as a part of a complete service package including a sales spot, equipment for feet study, and equipment for making customized insoles.
- the service package may also include training the sales personnel via an educational program that may be an (intensive) course or lection-based.
- a sales spot is prepared 218 for use at retailer premises.
- the sales spot may be advantageously delivered as a predetermined ensemble comprising a number of separate elements having a recommended location within the spot so that the spot aggregate can be just conveniently positioned in a preferred location, or alternatively, the retailer may at least partially build it up according to his personal preferences from separate elements if seen useful.
- the spot includes the necessary means to rapidly provide a customer with properly shaped insoles. Such means may include a stand or a rack with a number of insole preforms (preferably packaged in lightweight, space-saving and at least partially transparent cases, made of e.g.
- the study means may include, for example, a podoscope, a camera system, and a computer.
- the podoscope is, by definition, a device for analysing the interaction of the foot and a supporting surface.
- a client stands on a transparent glass plate of the podoscope, see reference numeral 404 of sketch 402 in figure 4 , whereupon an image of his feet is shown through a mirror to the person doing the measurements, see lower sketch 410.
- the study means e.g. aforesaid podoscope, can also include data acquisition means such as an optical scanner, a camera, or some other suitable apparatus for optically and/or electrically imaging the client's feet and their position (errors), see numeral 406.
- data acquisition means such as an optical scanner, a camera, or some other suitable apparatus for optically and/or electrically imaging the client's feet and their position (errors), see numeral 406.
- Such imaging technology enables storing client-dependent data at the retailer for future use and archiving purposes.
- the imaging technology may be hooked up to a printer and/or a computer, see numeral 502 of figure 5 , which is configured to visualize different views, e.g. foot images with optional zooming, silhouettes, etc, on a display based on the gathered data.
- the trained sales clerk may then point out to the client, via the visualized image, the problems found in his feet position and explain how the situation can actually be improved by the custom-made insoles in accordance with the invention.
- the computer may also be configured to store the data, preferably client-specifically. Respectively, printed images can be stored.
- the computer may include a data transfer interface of its own, e.g. a network interface, or a separate data transfer interface may be coupled thereto or directly to the data acquisition means to transfer the acquired data to external destinations such as the retailer chain's central server or third parties' databases, if allowed by the client.
- the start-up phase includes educating 220 the sales clerks and other personnel about the sales and customisation processes of the insoles of the invention.
- professionals authorized by the insole manufacture shall take care of the training. It is beneficial to the result that the personnel know how to utilize the different insole designs, the oven, the study means, and the molding stand.
- a responsibility for different devices can also be divided between several persons, i.e. one person may take care of the feet analysis whereas the other actually molds the insole to a proper form. Only qualified in-store professionals may be entitled to wear a brand label associated with the insoles.
- the educational program may include regular follow-ups that can be correspondingly made mandatory for continued qualification and right to wear the brand label.
- step 204 refers to a client-specific analysis phase during which a trained sales clerk initially studies the client's needs either by manual/ocular investigation of the feet or by listening to the client, preferably by doing both.
- the analysis step 204 has been further illustrated in figure 3 to set forth different aspects included therein; first of all, a proper basic design or "style" of the insole may be determined 304, via usage analysis 302, from multiple options such as men's/women's, sport (general and optionally discipline-resolution such as tennis, running, soccer, football, basketball, hockey, skating, skiing, trekking, etc), health, military, medical and basic design, the design then affecting e.g. shape, material, thickness, elasticity, etc of the preform.
- the information for the analysis and decision-making e.g. desired use/purpose of the insoles 302
- the client may have brought along a pair of shoes to be used with the insoles, for example, which facilitates selecting a proper preform design and size.
- more refined data about the client's feet and their position may be collected 306 and reviewed via e.g. visual inspection and the study means such as the podoscope explained hereinbefore.
- a foot size is naturally a typical parameter/criterion required for determining a proper insole preform 308, although an oversized preform may in some applications be decently cut to a smaller size.
- the client may directly tell the size to the clerk, but the size may also be verified on the spot by utilizing available measurement equipment.
- special conditions 310 such as hallux valgus, pes planus, pes cavus, rheumatism, diabetes, or pregnancy may imply a need for special preforms that are advantageously in the retailer stock as well.
- Rare situations may still occur wherein a responsible sales clerk notices that the client's feet and/or indicated use of the insoles require deeper investigation and a proper insole cannot be reliably addressed on the basis of the acquired information, or that the needed preforms are simply not available.
- the sales clerk may then refer the client to a specialized clinic employing foot specialists, e.g. physiotherapists or podiatrists, with more profound knowledge 312.
- the clerk may himself contact the clinic specialists for consultation and optionally order special preforms to the client, if possible.
- more detailed examination shall be conducted; for example, neuromuscular, circulation joints, and soft tissues palpation and motion tests can be performed.
- the biomechanics of the lower extremities and the spine can be evaluated by videotaping the client's standing position, walking and running. Radiographs, bone scans, CT, MR, or sonography may also be available.
- the client may receive fully guaranteed service, whereupon basic cases can be solved on the spot at retailer premises whereas more comprehensive study shall be carried out at the clinic.
- a computer with tailored software may be provided to interview the client about feet properties and intended use of the insoles, which then at least semi-automatically forms a client profile based on a predetermined set of profiling rules.
- the client may have his preferences already stored at the retailer due to an existing customer history, in which case the analysis step may be basically omitted provided his or her personal data and future use of the new insoles will substantially remain unchanged.
- the software or the sales clerk optionally assisted by the software may recommend a proper insole design to the client based on the available information, and a corresponding insole preform will be then picked up, preferably from the nearby rack where the preforms (or packages, each comprising one or two preforms) reside on view as conveniently grouped based on the sizes/designs thereof.
- the preforms may have been packed separately instead of traditional pair-packs.
- the client already knows his needs without motivation for re-analysing the case, he may pick up proper preforms by himself after which he consults the clerk for the rest of the customisation procedure.
- a proper pair of preforms has already been determined and they are heated up to a temperature that enables reformation of at least predefined portions thereof as a response to a physical force introduced on them.
- the material selections for the preforms as explained hereinbefore guarantee a softening temperature for the predetermined portions that is still tolerable by the client, e.g. 85°C.
- the client may wear a sock or corresponding protection to insulate the foot from extensive heat.
- the heating device is advantageously selected and configured so that the heating up time is preferably only a few minutes or less in order to provide the client with swift service.
- the heated preforms are preferably placed on a flexible material like a casting pad (e.g. a pillow/cushion) of a molding stand, for example, and the client is instructed to introduce force via his soles to the preform surfaces meanwhile the clerk guides the client's feet to a proper position and manually, shapes, by physical interaction, e.g. through fingertips, the insoles to conform to the feet and achieve an improved mold according to the principles of the invention, see step 210 in figure 2 and numeral 506 in figure 5 .
- Shaping may refer to introducing protrusions to a desired direction from the original insole form/plane, for example.
- the client may stand on the preforms to introduce the necessary pressure corresponding to the real weight bearing posture.
- the molding stand includes a lower portion to receive one or more casting pads and the client's feet on top of those, and an upper portion such as a crossbar from which the client can seek support during the casting process.
- step 212 the clerk checks whether each insole conforms to the respective foot (sole) of the client and provides improved foot position and body posture, refer to numerals 508 and 510 of figure 5 . In case there is still some tweaking to do, the method may be redirected to a proper antecedent step such as step 206, 208, or 210. Otherwise, the individually formed insoles are fit to the client's shoes, which may require slight further adjustments like cutting the border areas, etc 224.
- step 216 The method execution is ended in step 216. It is waited until the temperature of the insoles drops under the glass transition temperature of the thermoplastic after which the insoles can be taken into use.
- the customer data may be stored 226 to facilitate future business with the same client. This preferably happens only after receiving an explicit acceptance for storing personal information by the client.
- Step 226 may also include providing insole maintenance instructions to the client.
- the clerks may be advised to channel the client's interest into the insoles of the invention even in the case the client is initially short of new shoes 222 only. This may happen either unconditionally or not until noticing a foot problem that the custom insole could alleviate.
- the retail store may also offer a product guarantee that enables the client to get the preforms reshaped again by the retailer without any additional cost or with just a basic service fee, if a need arises.
- a liner or other element/layer to be placed in a shoe and possibly provided with a shoe or other footwear can be considered as the insole of the invention provided that it features similar effects and overall applicability.
- a shoe of the invention may be offered in the spirit of the above method.
- a shoe sole or a part thereof may be constructed by following the ideas presented hereinbefore with reference to an insole.
- E.g. the sole of a soft gym shoe, a ballet shoe, a sandal or other type of shoe with soft enough portions suitable for manual molding after heating can be reformed accordingly.
- the preforms may be reshaped by utilizing some other feature than an embedded thermoplastic material.
- certain resins can be hardened by utilizing predetermined chemical substances.
- they in applying those it's important to select materials that enable trouble-free but still real-time reshaping of the preform on the client's foot, i.e. they must not introduce health hazards, e.g. burns, to the client upon or after the reshaping procedure.
- the invention may also be applied in manufacturing customized footwear for animals.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200632113A SI2040576T1 (sl) | 2006-07-14 | 2006-07-14 | Individualno oblikovana obutev |
PL06778483T PL2040576T3 (pl) | 2005-01-28 | 2006-07-14 | Indywidualnie formowane obuwie |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FI2006/000254 WO2008006929A1 (en) | 2006-07-14 | 2006-07-14 | Individually formed footwear and a related method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2040576A1 EP2040576A1 (en) | 2009-04-01 |
EP2040576B1 true EP2040576B1 (en) | 2016-08-31 |
Family
ID=37719304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06778483.5A Active EP2040576B1 (en) | 2005-01-28 | 2006-07-14 | Individually formed footwear |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP2040576B1 (lt) |
JP (1) | JP2009543633A (lt) |
KR (1) | KR101313762B1 (lt) |
CA (1) | CA2657320C (lt) |
CY (1) | CY1118300T1 (lt) |
DK (1) | DK2040576T3 (lt) |
ES (1) | ES2602093T3 (lt) |
HK (1) | HK1131011A1 (lt) |
HU (1) | HUE031100T2 (lt) |
LT (1) | LT2040576T (lt) |
NO (1) | NO344817B1 (lt) |
PT (1) | PT2040576T (lt) |
SI (1) | SI2040576T1 (lt) |
WO (1) | WO2008006929A1 (lt) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8870876B2 (en) | 2009-02-13 | 2014-10-28 | Tarsus Medical Inc. | Methods and devices for treating hallux valgus |
US8277459B2 (en) | 2009-09-25 | 2012-10-02 | Tarsus Medical Inc. | Methods and devices for treating a structural bone and joint deformity |
US8652141B2 (en) | 2010-01-21 | 2014-02-18 | Tarsus Medical Inc. | Methods and devices for treating hallux valgus |
US8696719B2 (en) | 2010-06-03 | 2014-04-15 | Tarsus Medical Inc. | Methods and devices for treating hallux valgus |
WO2013004886A1 (en) * | 2011-07-06 | 2013-01-10 | Footbalance System Oy | An insole with heating element |
KR200469214Y1 (ko) * | 2012-02-03 | 2013-09-27 | 주식회사 아이지디 | 듀얼 미러형 족저경을 이용한 측정 장치 |
DK3160285T3 (da) * | 2014-06-30 | 2021-02-15 | Footbalance System Oy | Fodpositionsføringsindretning |
ES2629608B1 (es) * | 2016-02-10 | 2018-05-22 | Antonio Moron de Blas SL | Procedimiento de obtención de una plantilla y producto así obtenido |
AU2018430801A1 (en) * | 2018-07-05 | 2021-01-14 | Footbalance System Oy | A method and a system for obtaining foot analysis data |
KR102324512B1 (ko) * | 2021-03-23 | 2021-11-10 | 강원식 | 착용자 맞춤형 인솔 제조방법 및 이에 의해 제조된 인솔 |
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- 2006-07-14 CA CA2657320A patent/CA2657320C/en active Active
- 2006-07-14 JP JP2009520001A patent/JP2009543633A/ja active Pending
- 2006-07-14 WO PCT/FI2006/000254 patent/WO2008006929A1/en active Application Filing
- 2006-07-14 SI SI200632113A patent/SI2040576T1/sl unknown
- 2006-07-14 KR KR1020097002989A patent/KR101313762B1/ko active IP Right Grant
- 2006-07-14 ES ES06778483.5T patent/ES2602093T3/es active Active
- 2006-07-14 HU HUE06778483A patent/HUE031100T2/en unknown
- 2006-07-14 LT LTEP06778483.5T patent/LT2040576T/lt unknown
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2008
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Also Published As
Publication number | Publication date |
---|---|
CY1118300T1 (el) | 2017-06-28 |
KR101313762B1 (ko) | 2013-10-01 |
WO2008006929A1 (en) | 2008-01-17 |
NO20085205L (no) | 2009-01-08 |
CA2657320A1 (en) | 2008-01-17 |
KR20090040331A (ko) | 2009-04-23 |
LT2040576T (lt) | 2016-11-25 |
SI2040576T1 (sl) | 2016-12-30 |
HK1131011A1 (zh) | 2010-01-15 |
HUE031100T2 (en) | 2017-07-28 |
NO344817B1 (no) | 2020-05-04 |
ES2602093T3 (es) | 2017-02-17 |
JP2009543633A (ja) | 2009-12-10 |
CA2657320C (en) | 2014-03-18 |
PT2040576T (pt) | 2016-11-25 |
EP2040576A1 (en) | 2009-04-01 |
DK2040576T3 (en) | 2016-12-19 |
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