AU2005282111B2 - A fresh keeper - Google Patents
A fresh keeper Download PDFInfo
- Publication number
- AU2005282111B2 AU2005282111B2 AU2005282111A AU2005282111A AU2005282111B2 AU 2005282111 B2 AU2005282111 B2 AU 2005282111B2 AU 2005282111 A AU2005282111 A AU 2005282111A AU 2005282111 A AU2005282111 A AU 2005282111A AU 2005282111 B2 AU2005282111 B2 AU 2005282111B2
- Authority
- AU
- Australia
- Prior art keywords
- drawer
- fresh keeper
- fresh
- inner drawer
- outer drawer
- 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.)
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Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
- F25D25/024—Slidable shelves
- F25D25/025—Drawers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2325/00—Charging, supporting or discharging the articles to be cooled, not provided for in other groups of this subclass
- F25D2325/022—Shelves made of glass or ceramic
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Packages (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Centrifugal Separators (AREA)
Abstract
A fresh keeper used in refrigerating apparatus comprises a lid ( 1 ), an outer drawer ( 2 ) and at least one inner drawer ( 3 ) which is contained in said outer drawer, a gap is formed between the outer drawer and the inner drawer such that said outer drawer ( 2 ), said inner drawer ( 3 ) and said lid ( 1 ) form a sealed space when they are in mounting state. The effect of heat preservation is improved due to the air insulating layer, thereby the temperature inside the fresh keeper is not easily influenced by the ambience and the temperature inside the fresh keeper is more stable. Because of the double-layer structure used in the invention, an air layer is formed. The pressure of the vapor in the air layer is much more than that of the inner drawer, thus it is difficult for the vapor in the inner drawer to diffuse into the air layer, and thereby the moisture in the inner drawer is ensured so that the humidity is kept to be a high value.
Description
WO 2006/026898 PCT/CN2005/000044 A Fresh Keeper Technical field The invention relates to a fresh keeper. More particularly, the invention relates to a fresh keeper used in refrigerating apparatus. Background art The two most important factors affecting the shelf-life of refrigerated food are temperature and humidity. So far most of the attention has been aimed at controlling just the temperature of the refrigerators; there are not a method and a device keeping fresh by controlling the humidity. Several fresh keepers have been used in refrigerating apparatus. A kind of fresh keeper is widely used at present. This fresh keeper consists of a simple single-layer drawer which was not sealed well, thus the temperature in the drawer is not stable and water diffuses quickly while the temperature and the humidity of ambience and their variation have influence on those inside the drawer, thereby the food contained in the drawer is easy to perish or dehydrate. A kind of sealed box is also used to keep fresh. Some sealed material are used in the sealed box while the sealed box could not well prevent water from diffusing, because the vapor pressure of air in the box forces the humidity in the box to balance with that of ambience through a small aperture, therefore water would diffuse quickly and the temperature would not be stable if there is even a small aperture, even if the food is stored in a sealed box. There is further a fresh keeper to adjust the humidity thereof by means of a mechanical adjusting structure, but the mechanical adjusting structure 1 WO 2006/026898 PCT/CN2005/000044 could not keep the humidity inside the box stable exactly. The prior device keeping fresh above can not provide stable humidity and temperature which is useful to keep vegetable and fruits fresh. Contents of the invention The object of the invention is to provide a fresh keeper which can ensure stable temperature and higher humidity thereof, therefore the invention could prevent the water contained in the food from diffusing. To achieve the object, a fresh keeper for refrigerating apparatus of the invention comprises a lid, an outer drawer and at least one inner drawer which is contained in said outer drawer, and with which the outer drawer forms a gap, such that said outer drawer, said inner drawer and said lid form a sealed space when being in mounting state. According to the invention, said outer drawer consists of a left sidewall, a right sidewall, a back and a bottom, said inner drawer consists of a left sidewall, a right sidewall, a back, a bottom and a front, said front is single-layer or double-layer. According to the invention, said outer drawer and inner drawer is opened on top. According to the invention, said outer drawer is formed integrally with said lid, said inner drawer has a single-layer or double-layer front. According to the invention, an isolating device is provided between said inner drawer and said outer drawer. According to the invention, said isolating device is at least one protrusion provided outside said inner drawer or inside said outer drawer. According to the invention, said isolating device is a flange provided on at least one sidewall of said inner drawer. According to the invention, two integrated guides are provided on the edge of the bottom of said outer drawer such that said inner drawer could be 2 WO 2006/026898 PCT/CN2005/000044 supported on the integrated guides. According to the invention, at least one cylindrical portion is provided on the bottom outside said inner drawer or the top inside said outer drawer. According to the invention, said lid is formed with transparent material or translucent material. According to the invention, said gap is 5mm-30mm. According to the invention, said gap is 10mm. According to the invention, one or more movable dividing plates are put in said inner drawer. According to the invention, a portion engaged with the supporting part of the refrigerating apparatus is provided outside said outer drawer so that said fresh keeper could be put into the refrigerating apparatus slidablely. The invention, as compared with the prior art has following advantages: First, the fresh keeper is equivalent to be thickened due to the air isolating layer in the invention so that the effect of heat preservation is improved, thereby the temperature inside the fresh keeper is not easily influenced by ambience, and the temperature inside the fresh keeper is more stable. Second, because of the double-layer structure used in the invention, an air layer is formed. The pressure of the vapor in the air layer is much more than that in the inner drawer, thus it is difficult for the vapor in the inner drawer to diffuse into the air layer, and thereby the moisture in the inner drawer is ensured so that the humidity therein is kept to be a higher value. Description of figures The invention is described in more detail below, with reference to the accompanying drawings, in which: Figure 1 is an exploded view of the fresh keeper according to the first embodiment of the invention; 3 WO 2006/026898 PCT/CN2005/000044 Figure 2 is a sectional view of the fresh keeper in figure 1, in the tightly engaged state; Figure 3 is an exploded view of the fresh keeper according to the second embodiment of the invention; Figure 4 is a sectional view of the fresh keeper in figure 3, in the tightly engaged state; Figure 5 is a sectional view taken along line A-A in figure 4; Figure 6 is an exploded view of the fresh keeper according to the third embodiment of the invention; Figure 7 is a sectional view of the fresh keeper in figure 6, in the tightly engaged state; Figure 8 is an exploded view of the fresh keeper according to the forth embodiment of the invention; Figure 9 is a sectional view of the fresh keeper in figure 8, in the tightly engaged state; Figure 10 is a sectional view taken along line B-B in figure 9; Figure 11 is a graph showing the comparison between the variation of the relative humidity in the fresh keeper of the invention and that in the vegetable drawer of prior art; Figure 12 is a graph showing the comparison between the variation of the temperature in the fresh keeper of the invention and that in the vegetable drawer of prior art. Embodiment of the invention The fresh keeper shown in figure 1 consists of a lid 1, an outer drawer 2 and an inner drawer 3. The inner drawer 3 could be several drawers in which different foods may be put. The inner drawer 3 is smaller than the outer drawer by a predetermined size. When the inner drawer 3 is put into the 4 WO 2006/026898 PCT/CN2005/000044 outer drawer 2, the lid 1 is installed on the outer drawer 2, a front wall 4 of the inner drawer 3 lies against two sidewalls, a bottom and the lid 1 of the outer drawer 2, thereby a sealed space is formed inside the inner drawer 3. At least one protrusion 5 is provided in the sidewalls and the bottom of the inner drawer 3, when the inner drawer 3 is set in the outer drawer 2, a desired distance is kept between the inner drawer 3 and the outer drawer 2 due to the protrusion 5, thus an air insulation is formed between the inner drawer 3 and the outer drawer 2, as shown in figure 2, the protrusions 5 could also be provided on the sidewall and the bottom of the outer drawer 2. The gap of the air insulation between the inner drawer 3 and the outer drawer 2 is 5mm-30mm because of the difference of their sizes. Preferably, the gap is 10mm. Preferably, the front 4 of the inner drawer is double-layer. A flange 6 may be provided in the predetermined position of the two sidewalls and the back of the inner drawer 3, the flange 6 is preferably provided on the top, as shown in figure 3, thus a desired distance exists between the sidewalls and the back of the outer drawer 2 and those of inner drawer 3; preferably, two integrated guides 8 are provided on the edge of the bottom of the inner drawer 2, as shown in figure 5, thus the inner drawer 3 is supported on the integrated guides 8 of the outer drawer 2, when the fresh keeper is in close state, a desired distance exists between the bottom of the inner drawer and that of the outer drawer, as shown in figure 4. As shown in figure 6, an outer drawer 2 having four sidewalls and a bottom, and a inner drawer 3 having four sidewalls and a bottom could also be used, the inner drawer 3 could be put into the outer drawer 2 directly, a cylindrical portion 7 is provided on the bottom of said inner drawer 3, the cylindrical portion 7 could also be provided in the corresponding position inside said outer drawer 2, therefore a desired distance exists between the bottom of the inner drawer and that of the outer drawer. A flange 6 could be provided at predetermined position in the four sidewalls of the inner drawer 3, 5 WO 2006/026898 PCT/CN2005/000044 the flange is preferably set on the top, as shown in figures 6 and 7, therefore a desired distance exists between the sidewalls of the inner drawer 3 and those of the outer drawer 2 when the inner drawer 3 is put into the outer drawer 2. The distance between the sidewalls and the bottoms of the two drawers forms an air isolating layer. When the lid 1 covers the outer drawer 2, a sealed space is formed inside. Preferably, a handle may be provided on the lid 1 to facilitate to open/close the lid 1. The outer drawer 2 may also be formed integrally with said lid 1, a flange 5 is provided on the left and right sidewalls of the inner drawer 3 respectively, a flange 10 is also provided on the left and right sidewalls of the outer drawer 2 respectively, as shown in figure 8, a stiffener 9 extending in the direction parallel to the back is provided on the lid of the outer drawer 2 at the distance from the back of the outer drawer, as shown in figure 9, when the inner drawer 3 is put into the outer drawer 2, the flanges 5 of the inner drawer 3 could overlap with the flanges 10 of the outer drawer 2, the back of the inner drawer could put against the stiffener 9, therefore a distance could be formed between the left and right sidewalls, the back, the bottom of the inner drawer and those of the outer drawer. A removable dividing plate which divides the inner drawer into several areas is provided in the inner drawer 3 to facilitate to store the food. Perishable products like vegetables that are not closely packed in moisture proof material stand the risk of dehydration. To avoid this they require an environment with high (>95%) and stable relative humidity and a low (-1-0*C) and stable temperature to keep them fresh. The fluctuations of temperature and humidity should lie within ±0.5C and ±5 % respectively. A test was performed on the fresh keeper of the invention with a 10mm air gap. A lettuce head was put in the fresh keeper as shown in figure 6 and one into the vegetable drawer of the prior art. Lettuce was chosen because it is a perishable vegetable with a large surface area. The duration of the test 6 WO 2006/026898 PCT/CN2005/000044 was 18 days without opening the refrigerator. Temperature and relative humidity were measured. The weight of each lettuce was measured before and after they were placed in the refrigerator, and the results are as follows: Initial weight (g) Weight reduction (g) Loss (% Fresh keeper of the invention 290 20.7 7 Conventional fresh keeper 313 57.7 18 From the test results, it can be seen that, the weight reduction of the lettuce in the fresh keeper of the invention is only 7% compared to 18% in the conventional vegetable drawer. It should be noted that, before the test started the lettuce head put into the conventional vegetable drawer was physically larger compared to the one put into the fresh keeper of the invention, and an appreciable difference could be observed when comparing the two lettuce heads after the test. A test was performed on the fresh keeper of the invention as shown in figure 1. The results of the test show that, the relative humidity in the fresh keeper of the invention varies between 87-90%, and a fluctuation of only ± 1.5% relative humidity is achieved much less than the allowable fluctuation of ±5%, as shown in figure 11. Figure 11 is a graph showing the variation of the humidity in the fresh keeper of the invention and that in the vegetable drawer. It could be seen appreciably that the fluctuation of relative humidity in the fresh keeper of the invention is less than that in the vegetable drawer of the prior art. The temperature in the fresh keeper of the invention fluctuates between approximately 4.8-5.1'C, a fluctuation of only ±0.15'C, far below the desired value of ±0.5'C, as shown in figure 12. Figure 12 is a graph showing the variation of the temperature in the fresh keeper of the invention and that in the vegetable drawer of the prior art. It could be seen 7 WO 2006/026898 PCT/CN2005/000044 appreciably that the fluctuation of relative humidity in the fresh keeper of the invention is far below that in the vegetable drawer of the prior art. The results show that between the inner drawer and the outer drawer an air insulating layer is formed which has the damping effects to temperature and humidity so that the temperature and humidity inside the fresh keeper are kept stable. For one skilled in the art, it is obvious that the invention is not limited to the above described preferable embodiments only, but it can be modified within the scope of the appended claims. 8
Claims (13)
1. A fresh keeper for a refrigerating apparatus comprising a lid (1), characterized in that it further comprises an outer drawer (2) and at least one inner drawer (3) which is contained in said outer drawer, a gap is formed between the outer drawer and the inner drawer such that when the lid is installed on the outer drawer(2), said outer drawer (2), said inner drawer (3) and said lid form a sealed space when they are in mounting state, and in that the outer drawer on the outside thereof is provided with a portion for engagement with a supporting part of the refrigerator so that the fresh keeper is slidably movable into the refrigerator.
2. The fresh keeper according to claim I , characterized in that said outer drawer (2) consists of a left sidewall, a right sidewall, a back and a bottom, said inner drawer (3) consists of a left sidewall, a right sidewall, a back, a bottom and a front, said front is a single-layer or double-layer front (4).
3. The fresh keeper according to claim 1, characterized in that each said outer drawer (2) and inner drawer (3) is opened on top.
4. The fresh keeper according to any one of claims I to 3, characterized in that an isolating device is provided between said inner drawer and said outer drawer.
5. The fresh keeper according to claim 4, characterized in that said isolating device is at least one protrusion (5) provided outside said inner drawer (3) or inside said outer drawer (2).
6. The fresh keeper according to claim 4, characterized in that said isolating device is a flange (6) provide on at least one sidewall of said inner drawer.
7. The fresh keeper according to claim 2, characterized in that two integrated guides (8) are provided on the edges of the bottom of said outer drawer (2) such that said inner drawer (3) could be supported on the integrated guides. 9
8. The fresh keeper according to claim 3, characterized in that at least one cylindrical portion (7) is provided on the bottom outside said inner drawer (3) or the top inside said outer drawer (2).
9. The fresh keeper according to any one of claims I to 3, characterized in that said lid is formed with transparent material or translucent material.
10. The fresh keeper according to any one of claims I to 3, characterized in that said gap is 5mm-30mm.
11. The fresh keeper according to claim 10, characterized in that said gap is 10mm.
12. The fresh keeper according to claim I or 2, characterized in that one or more small holes are provided on the inner drawer (3).
13. The fresh keeper according to claim I or 2, characterized in that one or more removable dividing plates are put in said inner drawer (3). 10
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200420093067.6 | 2004-09-06 | ||
CNU2004200930676U CN2731373Y (en) | 2004-09-06 | 2004-09-06 | Freshness-retaining fruit and vegetable box |
PCT/CN2005/000044 WO2006026898A1 (en) | 2004-09-06 | 2005-01-12 | A fresh keeper |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2005282111A1 AU2005282111A1 (en) | 2006-03-16 |
AU2005282111B2 true AU2005282111B2 (en) | 2010-10-28 |
Family
ID=35051707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2005282111A Active AU2005282111B2 (en) | 2004-09-06 | 2005-01-12 | A fresh keeper |
Country Status (12)
Country | Link |
---|---|
US (1) | US20080265733A1 (en) |
EP (1) | EP1794518B1 (en) |
JP (1) | JP2008512630A (en) |
CN (2) | CN2731373Y (en) |
AT (1) | ATE440252T1 (en) |
AU (1) | AU2005282111B2 (en) |
BR (1) | BRPI0514915B1 (en) |
CA (1) | CA2579173A1 (en) |
DE (1) | DE602005016129D1 (en) |
ES (1) | ES2332140T3 (en) |
NZ (1) | NZ553623A (en) |
WO (1) | WO2006026898A1 (en) |
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CN102906518B (en) * | 2010-03-10 | 2016-01-20 | 欧瑞尔有限公司 | Refrigerating cabinet |
CN103591758B (en) * | 2012-08-17 | 2017-04-26 | 海尔集团公司 | Refrigerator moisturizing drawer |
DE102013203723A1 (en) * | 2013-03-05 | 2014-09-11 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating appliance with a removable storage container |
KR102028022B1 (en) * | 2013-04-05 | 2019-10-04 | 삼성전자주식회사 | Refrigerator |
EP3052873B1 (en) | 2013-10-03 | 2018-02-14 | Arçelik Anonim Sirketi | A refrigerator comprising a drawer |
US9353989B2 (en) * | 2013-10-12 | 2016-05-31 | Melody Ann Furr | Food storage system and method |
CN104266447B (en) * | 2014-09-30 | 2017-06-06 | 青岛海尔股份有限公司 | Refrigerator |
CN104567195B (en) * | 2014-12-31 | 2017-04-19 | 合肥华凌股份有限公司 | Refrigerator |
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CN105091450B (en) * | 2015-07-30 | 2018-07-10 | 沈阳海尔电冰箱有限公司 | Refrigerator |
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DE102015222229A1 (en) * | 2015-11-11 | 2017-05-11 | BSH Hausgeräte GmbH | Domestic refrigerating appliance with a freshness container whose front wall is an outer wall of the device |
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DE102016216302A1 (en) * | 2016-08-30 | 2018-03-01 | BSH Hausgeräte GmbH | Household refrigerators device |
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DE102018130341A1 (en) * | 2018-07-06 | 2020-01-09 | Liebherr-Hausgeräte Lienz Gmbh | cooling drawer |
US10944547B2 (en) * | 2018-08-10 | 2021-03-09 | International Business Machines Corporation | Secure environment device management |
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CN112747549B (en) * | 2019-10-31 | 2022-09-20 | 青岛海尔电冰箱有限公司 | Storage device for refrigerator and refrigerator with storage device |
CN113324372A (en) * | 2020-02-28 | 2021-08-31 | 无锡松下冷机有限公司 | Drawer assembly and refrigerator with same |
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-
2004
- 2004-09-06 CN CNU2004200930676U patent/CN2731373Y/en not_active Expired - Fee Related
-
2005
- 2005-01-12 CN CNB2005800298293A patent/CN100565053C/en active Active
- 2005-01-12 WO PCT/CN2005/000044 patent/WO2006026898A1/en active Application Filing
- 2005-01-12 AT AT05700418T patent/ATE440252T1/en not_active IP Right Cessation
- 2005-01-12 JP JP2007529312A patent/JP2008512630A/en active Pending
- 2005-01-12 ES ES05700418T patent/ES2332140T3/en active Active
- 2005-01-12 EP EP05700418A patent/EP1794518B1/en active Active
- 2005-01-12 AU AU2005282111A patent/AU2005282111B2/en active Active
- 2005-01-12 DE DE602005016129T patent/DE602005016129D1/en active Active
- 2005-01-12 CA CA002579173A patent/CA2579173A1/en not_active Abandoned
- 2005-01-12 NZ NZ553623A patent/NZ553623A/en not_active IP Right Cessation
- 2005-01-12 US US11/574,686 patent/US20080265733A1/en not_active Abandoned
- 2005-01-12 BR BRPI0514915-0A patent/BRPI0514915B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3680941A (en) * | 1971-02-17 | 1972-08-01 | Sears Roebuck & Co | Food storage compartment for refrigerator |
US20030115892A1 (en) * | 1999-02-26 | 2003-06-26 | Xiaoyong Fu | Thermoelectric temperature controlled refrigerator food storage compartment |
CA2326906A1 (en) * | 2000-01-19 | 2001-07-19 | Maytag Corporation | Air flow assembly for refrigerator food storage system |
Also Published As
Publication number | Publication date |
---|---|
CA2579173A1 (en) | 2006-03-16 |
BRPI0514915B1 (en) | 2018-02-14 |
EP1794518A1 (en) | 2007-06-13 |
CN100565053C (en) | 2009-12-02 |
BRPI0514915A (en) | 2008-06-24 |
EP1794518A4 (en) | 2007-12-26 |
JP2008512630A (en) | 2008-04-24 |
CN101103236A (en) | 2008-01-09 |
CN2731373Y (en) | 2005-10-05 |
EP1794518B1 (en) | 2009-08-19 |
US20080265733A1 (en) | 2008-10-30 |
WO2006026898A1 (en) | 2006-03-16 |
ATE440252T1 (en) | 2009-09-15 |
NZ553623A (en) | 2011-03-31 |
DE602005016129D1 (en) | 2009-10-01 |
ES2332140T3 (en) | 2010-01-27 |
AU2005282111A1 (en) | 2006-03-16 |
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FGA | Letters patent sealed or granted (standard patent) |