EP2372251A2 - Grill- und/oder Backofen für den Haushalt - Google Patents

Grill- und/oder Backofen für den Haushalt Download PDF

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Publication number
EP2372251A2
EP2372251A2 EP11005065A EP11005065A EP2372251A2 EP 2372251 A2 EP2372251 A2 EP 2372251A2 EP 11005065 A EP11005065 A EP 11005065A EP 11005065 A EP11005065 A EP 11005065A EP 2372251 A2 EP2372251 A2 EP 2372251A2
Authority
EP
European Patent Office
Prior art keywords
light source
door
broiling
roasting
minimum
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Withdrawn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
EP11005065A
Other languages
English (en)
French (fr)
Inventor
Stefan Rummel
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Publication of EP2372251A2 publication Critical patent/EP2372251A2/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/008—Illumination for oven cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/307—Lighting for domestic or personal use for ovens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources

Definitions

  • This invention relates to a household broiling and/or baking oven and a method for the interior illumination of said broiling and/or baking oven.
  • Lighting the interior of a broiling, baking or roasting oven typically employs incandescent or halogen lamps.
  • these lamps i.e. for illuminating the interior of the oven, it is necessary to punch holes in the oven wall or inner oven chamber. Production tolerances may leave a gap between the lamp and the chamber or between the enclosure and the chamber. It is there that moisture from the oven interior can penetrate into the insulation where it can cause problems. That gap can also lead to unwanted heat loss from inside the oven.
  • the lamps are often mounted on the oven back or side wall so that, from an outside observer's view, the food is illuminated only indirectly. In the worst case, the observer is even blinded when looking inside the oven through the glass door.
  • DE 38 08 717 A1 describes a roasting and baking oven chamber in which the lighting system is mounted behind a side wall of the chamber.
  • the lighting system consists of an elongated reflector housing serving as the lamp support fixture and a protective glass plate shielding the lamp from the baking or cooking chamber of the oven.
  • the lighting system is positioned in the front section of the oven chamber.
  • the light source employed is a halogen lamp.
  • the lighting system described in DE 38 08 717 A1 may well provide better illumination of the oven interior and reduce the blinding effect, yet it still has to be installed through an opening in the oven chamber.
  • halogen and incandescent lamps suffer from considerable power dissipation, meaning that only a small portion of the power is converted into light while the remaining energy undesirably exits into the surroundings outside the oven in the form of heat. Since the lamps are restricted to certain temperatures, they cannot be insulated on the enclosure side.
  • the objective of this invention to improve the illumination in the interior of a broiling, baking or roasting oven in a manner whereby the aforementioned prior-art shortcomings are at least in part avoided or at least minimized.
  • the invention is also intended to provide good full-range illumination while at the same time saving energy to the best extent possible.
  • the novel broiling, roasting and/or baking oven in particular a household appliance-type broiling, roasting and/or baking oven according to claim 1, includes at least one lighting system, in particular for illuminating at least one interior space of the broiling, roasting and/or baking oven, said illumination system incorporating at least one electroluminescent light source.
  • electroluminescence refers to the direct luminescent excitation of luminescence pigments or luminophores by means of an electric alternating field.
  • Known examples include electroluminescence elements based on inorganic luminescent pigments or luminophores stimulated with alternating-current.
  • the luminescent pigments or luminophores may be embedded in a transparent organic or ceramic i.e. inorganic bonding compound. Among others, these may be in the form of foils, lacquers or even ceramic and other suitable support materials.
  • An electric current stimulates the pigments into luminescence. The higher the voltage applied, the greater the potential luminance or light intensity of these light sources. A change in the frequency of the alternating field can bring about a color shift.
  • Electroluminescent light sources of this type have been described for instance in DE 10 2004 019 611 A1 or DE 10 2004 016 709 A1 .
  • electroluminescent light sources lies in the fact that they emit relatively non-dazzling, flicker-free light and offer homogeneous luminosity over their entire surface. They also permit implementation in different colors. Another advantage of electroluminescent light sources is their modest energy consumption and near-absent heat generation. Moreover, they are extremely robust.
  • an electroluminescent light source permits the illumination of an oven chamber without the need to punch holes into the oven wall of chamber to accommodate the installation of lamps. It also means that condensation problems or heat loss due to air movement can be prevented. In addition, it permits uninterrupted insulation of the oven chamber and oven walls, ensuring improved energy efficiency. Finally, an electroluminescent light source permits better and more even illumination of the oven interior, perhaps from several sides if so desired.
  • the minimum of one electroluminescent light source is positioned on at least one section of at least one wall delimiting the oven interior and/or it constitutes at least one section of at least one wall delimiting the oven interior.
  • the electroluminescent light source is mounted directly on a wall of the oven interior, illuminating that interior space from there or through the wall if the latter is at least in part transmissive to light, or that the light source is integrated or embedded in a section of a wall or in a wall element of a wall composed of several elements, or mounted thereon.
  • the reference to a wall delimiting the oven interior includes all oven walls such as side walls, bottom and top panels, partitions and even doors etc.
  • the wall may be composed of one wall element or of several wall elements, which may be positioned side-by-side or one behind the other as viewed from the interior.
  • the wall often encompasses at least one wall element directly adjoining the oven interior, at least one insulating element or at least one insulating air space and at least one wall element separating the oven from the outside.
  • the heating device serving to heat the oven interior may on its part perhaps be at least partially integrated into a wall element.
  • the minimum of one wall delimiting the interior is an access door to the interior and the minimum of one electroluminescent light source is provided on at least a partial section of that door and/or constitutes a partial section of the door.
  • the door on its part may be composed of several door elements.
  • the minimum of one wall and/or the door, and especially a section of the wall or door facing the oven interior consists at least in part of at least one transparent material. Accordingly, it is possible for the electroluminescent light source to emit enough light into the interior of the broiling, roasting and/or baking oven, illuminating its contents of food that is being cooked, roasted or baked.
  • the minimum of one electroluminescent light source is covered or surrounded by a transparent material, especially glass.
  • At least one transparent material especially in the form of at least one pane or at least one coating, is preferably positioned between the minimum of one electroluminescent light source and the interior of the household broiling and/or baking oven. This is to ensure that the light emitted by the light source reaches the inside of the oven. It also prevents the light source from being directly exposed to the atmosphere in the oven interior which may not only be very hot but may also contain moisture as well as other substances such as oil droplets or particles etc. emanating from the food being cooked. While on the one hand protecting the light source from soiling or damage, it also protects the food in the oven from contamination by abrasion particles or fumes released by the light source.
  • At least a partial section of the minimum of one wall or of the minimum of one door consists of a transparent material over its entire area. It is thus possible, even when the oven chamber is closed, to see the oven interior from the outside, which interior can preferably be illuminated even when closed.
  • a cooling system for cooling the minimum of one electroluminescent light source.
  • electroluminescent light sources are restricted to a maximum operating temperature beyond which their performance may deteriorate.
  • a cooling system can make certain that, when the temperature prevailing inside the broiling or roasting oven is very hot, that maximum operating temperature of the light source is not exceeded.
  • such cooling can be achieved by means of a fluid such as air, gas or a suitable liquid caused to flow directly along the light source or along the adjoining material.
  • a wall or door section positioned at a distance from the light source but in contact with or near the oven interior, so that the heat does not even reach the light source in the first place.
  • the glass panes in a way as to protect the light source from overheating.
  • the glass pane or window functions as thermal insulation as well. The air cushion between the panes reinforces this thermal insulation.
  • the minimum of one electroluminescent light source is constituted of at least one electroluminescent foil applied in particular on a glass, ceramic or synthetic-material element, preferably on a glass, ceramic or plastic disk.
  • the electroluminescent foil may be up to 1 mm thick and/or carry an operating voltage of 60V to 100V.
  • the operating frequency is preferably in a range between 50 Hz and 3000 Hz. This permits the attainment of a high luminance level and thus good and even illumination of the oven interior.
  • Using an electroluminescent foil has the advantage that it is easy to process in a manufacturing operation and that by relatively simple methods it can be produced in a variety of shapes. It would also be possible in the event of a malfunction of the electroluminescent foil to replace it with a new foil.
  • the minimum of one electroluminescent light source consists of an electrode layer, preferably a lacquer containing electroluminophores, that is applied in particular on a glass, ceramic or synthetic-material element, preferably on a glass, ceramic or plastic disk.
  • a layer of this type may be embedded in or between several transparent panes. The result is a very robust light source. It also allows for a lighting effect in two mutually opposite directions.
  • one or several electroluminescent light sources may be implemented in one or several shapes and/or colors.
  • the light sources may be mounted on only one or on several walls bounding on the oven interior. For example, different colors or configurations can indicate different operating phases or operating programs.
  • the luminance or light intensity and/or luminous color of the electroluminescent light source may also be desirable to be able to vary the luminance or light intensity and/or luminous color of the electroluminescent light source. Such difference may be effected for instance by the open and, respectively, closed state of the oven. For example, the brightness may be lower when the oven is opened so as not to blind the user. Or, when the oven is opened, the luminous color may change to one that is more pleasing on the eye or indicates that the oven door is open. In addition, different light intensities may serve to indicate different operating phases or operating programs.
  • the minimum of one electroluminescent light source is mounted, farthest from the oven interior, on a section of a glass, ceramic or synthetic-material element of a wall and/or door consisting at least in part of transparent elements and adjoining at least one interior space, with the wall and/or door section encompassing the minimum of one electroluminescent light source being opaque toward the outside, while another section of the wall and/or door, preferably not encompassing an electroluminescent light source, consists entirely of a transparent material.
  • Positioning the light source on a section, farthest from the oven interior, of a glass, ceramic or synthetic-material element of a door consisting of several at least in part transparent elements has the advantage that it is farthest removed from the heat source.
  • the interpositioned door elements alone, or an air space, can shield the light source from exposure to the heat.
  • a cooling system may be provided in the intervening space. Since the section of the wall and/or door encompassing the minimum of one electroluminescent light source is opaque toward the outside, the light will not radiate toward the outside and the user of the oven will not be blinded. At that particular point the light penetrates into the oven interior only. Through the section that is entirely transparent the user can look into the oven interior and observe the broiling, roasting and/or baking process, again without being blinded.
  • At least one power supply for the electroluminescent light source feeding power may also be particularly advantageous to provide at least one power supply for the electroluminescent light source feeding power through the wall and/or door adjoining the minimum of one oven interior, and in particular through at least one door hinge. This obviates the need for providing an opening in the wall or door to the oven interior to accommodate for instance a cable or wires. It also prevents heat loss, or moisture penetration, through the wall or door.
  • the power input is controlled by a microswitch specifically activated by opening and/or closing the door.
  • That microswitch may be positioned in the door hinge or at some other point in the door frame, etc. It may also be particularly desirable if at least part of the minimum of one light source, especially of the light source located on the door, is switched on or off, and/or its brightness is increased or lowered, in a predefined or predefinable position of the door. This means that, specifically from a predefined or predefinable opening angle of the door, at least part of the light source in or on the door is switched off or dimmed so as not to blind the user.
  • the microswitch serves to turn the light on or off, and to vary the light intensity or luminance or even the luminous color.
  • the minimum of one oven interior remains illuminated in both the open and the closed state. This can be achieved for instance by providing several electroluminescent light sources, perhaps in the door for directly activated illumination and on the lateral walls or ceiling of the oven interior for illumination even in the open state.
  • the electroluminescent light sources on the lateral walls or on the interior ceiling as well are turned on or off or their brightness increased or dimmed in the predefined or predefinable position of the door. In that case, for example, primarily the light source in the door may be lit when the interior is closed while the light sources on the other walls would be on when the interior is open.
  • At least one electroluminescent light source of a predefined or predefinable shape and/or color is provided on a transparent section of a door. That light source may be activated perhaps by switching on the broiling or baking oven and may for instance indicate an operating state, an operating program, or even the manufacturer's logo, etc.
  • a broiling, roasting and/or baking oven and in particular a household broiling, roasting and/or baking oven preferably as described in one of the claims 1 to 12, is illuminated by at least one electroluminescent light source.
  • the electroluminescent light source employed is preferably at least one electroluminescent foil applied in particular on a glass, ceramic or synthetic-material element and/or an electrode layer preferably in the form of a lacquer containing electroluminophores, applied in particular on a glass, ceramic or synthetic-material element.
  • the minimum of one electroluminescent light source is specifically cooled by means of an appropriate cooling system.
  • At least one microswitch serves to turn the power to at least one electroluminescent light source on or off or to regulate it up or down, in particular when at least one door to the interior of the broiling, roasting and/or baking oven is closed and/or opened.
  • FIG. 1 shows a door 1 to the interior of a household broiling, roasting and/or baking oven.
  • One section of the door 1 is equipped with an electroluminescent foil 2 serving as the electroluminescent light source.
  • This type of electroluminescent foil can have a life span for instance of 2,500 hours, withstanding an operating temperature from -50°C to 65°C and a storage temperature from -65°C to 85°C.
  • the foil may be about 1 mm thick.
  • the operating voltage is preferably in the range between 60 V and 100 V, the operating frequency in the range between 50 Hz and 3000 Hz.
  • FIG. 1 is a top view of the inside 6 of the door (also refer to FIG. 2 ).
  • the light source transmits light into the oven interior.
  • the outside 7 of the door is opaque at least in the section encompassing the electroluminescent foil 2 so as not to blind the operator of the oven.
  • Another section 3 of the door, not equipped with an electroluminescent foil 2 consists entirely of a transparent material, which in this case is glass, allowing the operator to view the illuminated oven interior from the outside.
  • the power for the electroluminescent foil 2 is fed in by way of a door hinge 4 which also encompasses the microswitch, not illustrated, that deactivates the electroluminescent foil 2 when the door 1 is opened at a predefined opening angle and reactivates it when the door 1 is closed.
  • FIG 2 is a bottom view of the door 1. It shows, among others, the door hinges 4.
  • the door is composed of several door elements, in this case several transparent glass panes 5 with insulating air spaces 8.
  • the electroluminescent foil 2 is mounted on the door element 8 that is farthest from the inside 6 of the door, thus protecting it from direct exposure to the heat in the oven.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Electric Ovens (AREA)
  • Electroluminescent Light Sources (AREA)
EP11005065A 2006-07-28 2007-07-18 Grill- und/oder Backofen für den Haushalt Withdrawn EP2372251A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006034918A DE102006034918A1 (de) 2006-07-28 2006-07-28 Haushaltsgarofen und/oder -backofen
EP07765214A EP2047177A1 (de) 2006-07-28 2007-07-18 Koch- und/oder backofen füf den haushalt

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP07765214.7 Division 2007-07-18

Publications (1)

Publication Number Publication Date
EP2372251A2 true EP2372251A2 (de) 2011-10-05

Family

ID=38691814

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11005065A Withdrawn EP2372251A2 (de) 2006-07-28 2007-07-18 Grill- und/oder Backofen für den Haushalt
EP07765214A Withdrawn EP2047177A1 (de) 2006-07-28 2007-07-18 Koch- und/oder backofen füf den haushalt

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07765214A Withdrawn EP2047177A1 (de) 2006-07-28 2007-07-18 Koch- und/oder backofen füf den haushalt

Country Status (5)

Country Link
EP (2) EP2372251A2 (de)
AU (1) AU2007278519B2 (de)
CA (1) CA2657855A1 (de)
DE (1) DE102006034918A1 (de)
WO (1) WO2008012013A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3156734A1 (de) * 2015-10-12 2017-04-19 Rational Aktiengesellschaft Verfahren zur ansteuerung einer innenbeleuchtung eines gargeräts sowie gargerät

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007016255U1 (de) * 2007-11-21 2008-04-30 Rational Ag Gargerät mit automatischer Beleuchtungsanpassung
DE102009026954A1 (de) * 2009-06-16 2010-12-23 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungseinrichtung für den Behandlungsraum von Hausgeräten
DE102011084458A1 (de) * 2011-10-13 2013-04-18 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit mindestens einem Leuchtflächenelement im Behandlungsraum
DE102011088087A1 (de) * 2011-12-09 2013-06-13 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungsvorrichtung für ein Gargerät und Gargerät
DE102012105690A1 (de) * 2012-06-28 2014-01-02 Miele & Cie. Kg Gargerät und Verfahren zum Betreiben eines Gargerätes
DE102012218002A1 (de) * 2012-10-02 2014-04-03 BSH Bosch und Siemens Hausgeräte GmbH Gargerät und Verfahren zum Betreiben eines Gargeräts
DE102017006756B4 (de) 2017-07-17 2019-11-07 Emz-Hanauer Gmbh & Co. Kgaa Farbtemperaturvariable Leuchtvorrichtung sowie elektrisches Haushaltsgerät mit einer solchen Leuchtvorrichtung
EP3557943A1 (de) * 2018-04-20 2019-10-23 Electrolux Appliances Aktiebolag Platte für ein kochfeld
DE102018210878A1 (de) * 2018-07-03 2020-01-09 BSH Hausgeräte GmbH Haushaltsgerät

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE3808717A1 (de) 1988-03-16 1989-09-28 Licentia Gmbh Back- und bratofen-muffel mit einer beleuchtungseinrichtung
DE102004019611A1 (de) 2004-04-22 2005-11-17 Schreiner Group Gmbh & Co. Kg Mehrfarb-Elektrolumineszent-Element
DE102004016709A1 (de) 2004-04-05 2005-11-24 Schreiner Group Gmbh & Co. Kg Elektrolumineszenzdisplay

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DE3643354A1 (de) * 1986-12-18 1988-06-23 Bosch Siemens Hausgeraete Beleuchtungseinrichtung fuer einen backofen
DE3643371A1 (de) * 1986-12-18 1988-06-23 Bosch Siemens Hausgeraete Beleuchtungseinrichtung fuer einen backofen
DE3827528A1 (de) * 1988-01-15 1989-08-10 Cirbus Rudolf Vorrichtung fuer die beleuchtung der backmuffel und des garraums
DE3808716A1 (de) * 1988-03-16 1989-09-28 Licentia Gmbh Einrichtung zum beleuchten der innenraeume von haushaltgeraeten
CH678913A5 (en) * 1989-05-31 1991-11-29 Electrolux Ag Oven for forced cooling - with heat transferred to air which flows along channels in oven walls and door
DE4025734C2 (de) * 1990-08-14 1997-04-03 Bosch Siemens Hausgeraete Beleuchtungseinrichtung für einen Ofen
FR2782374B1 (fr) * 1998-08-14 2001-01-05 Cepem Dispositif d'aide au positionnement de produits a cuire dans un four
ATE359486T1 (de) * 2001-10-25 2007-05-15 Bsh Bosch Siemens Hausgeraete Beleuchtungseinrichtung für backöfen
DE10337327A1 (de) * 2003-08-12 2005-03-17 Koch Gmbh & Co. Kg Bedienfeld und Haushaltsgerät
DE10341330A1 (de) * 2003-09-08 2005-03-31 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät
DE102004011734A1 (de) * 2004-03-04 2005-09-22 E.G.O. Elektro-Gerätebau GmbH Elektrisches Haushaltsgerät
DE102004033715B4 (de) * 2004-07-13 2017-08-10 Schott Ag Verwendung einer Glas- oder Glaskeramikplatte
DE102005044347A1 (de) * 2005-09-16 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungsvorrichtung für Backöfen und Backofen
DE102005045367A1 (de) * 2005-09-22 2007-03-29 BSH Bosch und Siemens Hausgeräte GmbH Innenraumbeleuchtungsvorrichtung
DE202005017536U1 (de) * 2005-11-08 2006-03-02 Rudolf Brandowski & Peter Poradisch GbR (vertretungsberechtigter Gesellschafter: Herr Poradisch, 33098 Paderborn) Tür für Haushaltsgeräte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3808717A1 (de) 1988-03-16 1989-09-28 Licentia Gmbh Back- und bratofen-muffel mit einer beleuchtungseinrichtung
DE102004016709A1 (de) 2004-04-05 2005-11-24 Schreiner Group Gmbh & Co. Kg Elektrolumineszenzdisplay
DE102004019611A1 (de) 2004-04-22 2005-11-17 Schreiner Group Gmbh & Co. Kg Mehrfarb-Elektrolumineszent-Element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3156734A1 (de) * 2015-10-12 2017-04-19 Rational Aktiengesellschaft Verfahren zur ansteuerung einer innenbeleuchtung eines gargeräts sowie gargerät

Also Published As

Publication number Publication date
EP2047177A1 (de) 2009-04-15
AU2007278519B2 (en) 2010-12-09
AU2007278519A1 (en) 2008-01-31
WO2008012013A1 (en) 2008-01-31
CA2657855A1 (en) 2008-01-31
DE102006034918A1 (de) 2008-01-31

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