EP1827197A1 - Geschirrspülmaschine mit wartungsarmem siebsystem - Google Patents
Geschirrspülmaschine mit wartungsarmem siebsystemInfo
- Publication number
- EP1827197A1 EP1827197A1 EP05801424A EP05801424A EP1827197A1 EP 1827197 A1 EP1827197 A1 EP 1827197A1 EP 05801424 A EP05801424 A EP 05801424A EP 05801424 A EP05801424 A EP 05801424A EP 1827197 A1 EP1827197 A1 EP 1827197A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sieve
- centrifuge
- coarse
- dishwasher
- pump
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4202—Water filter means or strainers
- A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4202—Water filter means or strainers
- A47L15/4206—Tubular filters
Definitions
- the invention relates to a dishwashing machine, comprising a washing container with devices for applying wash ware to washing ware, a sizing system having at least one sieve for cleaning the washing liquor, a comminutor, a suds pump and a circulating pump, and two methods for purifying washing liquor in this system, in which filtered water is returned to the rinse cycle.
- a fine sieve which makes up a majority of the bottom surface of an interior of a dishwasher, forms a flat funnel with slightly inclined side walls, in the center of which a coarse sieve, optionally a fine sieve and a micro sieve are arranged. Only the four-stage sieve system has a fine sieve between the coarse sieve and the micro sieve. The polluted water thus either passes through the flat fine sieve or, if it can not penetrate there due to large dirt load there, filtered from the coarse sieve, the possibly interposed fine sieve and finally the micro sieve.
- the flat fine sieve and the construction of coarse to micro sieves are thus arranged in parallel.
- the water therefore runs in the three-stage system through a maximum of two, in four-stage by a maximum of three sieves. Remains that do not pass through the coarse sieve remain in front of it and thus lie on the floor surface in the field of vision of the operator. Dirt, on the other hand, that passes through the coarse filter, collects in front of the fine or micro sieve. There it must be removed by the user of the machine at regular intervals, because otherwise caused by added screen openings insufficient filter performance.
- a separating device for dishwashers Via an annular opening, the wash liquor flows into the separator, wherein this is done either via a coarse sieve or directly into a centrifuge. With the help of a Pumprotors the rinsing liquor is supplied to the spray devices. The rinsing liquor is thus cleaned either by the sieve or by the centrifuge. The crushing of remaining in the separator residues occurs when pumping the rinsing liquor in another flow direction.
- the invention therefore turns away from a sieve system, which must be regularly more or less laboriously maintained by the user, because it only collects and deposits the screenings. Rather, the invention pursues the principle of continuously cleaning the spent rinse liquor, crushing sieve residues and pumping them off and returning purified rinse liquor to the water cycle. All these processes take place parallel to each other.
- the coarsening of the coarse screen passage is suitable, for example, if the contaminated flushing solution was previously passed through a fine screen, ie the comminuted material is the sieve residue of the fine screen. In addition, it must be ensured that the screen residue of the micro sieve is removed so that it does not clog. Since the microsieve is generally downstream of the coarse and / or fine sieve, it is usually very difficult to access. To clean the microsieve, mechanical mechanisms can preferably be selected. According to the principle of a centrifuge is used for this purpose.
- the microsieve at least partially forms a lateral surface of a centrifuge for centrifuging the rinsing liquor, wherein the lateral surface of the centrifuge expands conically towards an ejection opening.
- Screened material which does not pass through the microsieve due to its size, is transported away from the surface of the microsieve as a result of the centrifugal force and the conical lateral surface and ejected through the ejection opening.
- the water on the other hand, is forced through the microsieve due to centrifugal force. This gives the microsieve a greater cleaning performance because, on the one hand, the passage of water through the microsieve is accelerated and, on the other hand, the sieve surface of sieve residues is continuously freed and thus immediately available again for further sieving operations.
- the screenings ejected from the centrifuge must be collected and transported as directly as possible.
- a collecting channel which is designed so that it collects the centrifugal force beyond an edge of the centrifuge outgoing screenings. It is collected with the help of the gutter and fed together with the current water of the drain pump. This causes screenings and water, which can penetrate through the microscreen, to be effectively separated from one another.
- coarse sieve and comminutor on the one hand and the centrifuge on the other hand can be arranged parallel to one another in the circuit of the dishwasher.
- a particularly advantageous arrangement results when the crusher are arranged in the flow between the coarse filter and the centrifuge.
- the sieve passage of the coarse sieve can then also be subjected to further cleaning.
- the water purified there which was previously supplied to the drain pump, can now be fed back into the Spülflotten Vietnameselauf. This increases the reuse rate of the rinse liquor and with it the water savings during operation of the dishwasher.
- a spatial arrangement of coarse sieve, shredder and centrifuge one above the other has the advantage that the polluted rinsing liquor is transported without external action following only the gravitational force of the coarse sieve in the crusher. If coarse sieve and shredder are also arranged concentrically with one another and together concentrically with respect to the centrifuge, the result is a particularly compact design, which is desirable due to the limited space available in a dishwashing machine. In addition, the crusher and the centrifuge can then be driven by the same shaft in a structurally simple way. Even so, the sieve system gains in compactness.
- the efficiency of a sieve system is measured by the throughput of the polluted rinsing liquor per unit of time.
- the throughput in turn depends on the line cross section of those units that have to pass the polluted rinsing liquor.
- the screening surfaces can represent a bottleneck in any sieving system because, unless they are mechanically cleaned, they reduce their passage area by laying or adding screenings. They are to be sized accordingly large.
- Another bottleneck may be the feed opening of the centrifuge. In an advantageous development of the invention, this is counteracted by the fact that the ejection opening of the centrifuge with the feed opening is in such a functional unit that it simultaneously serves as its feed opening.
- the screenings of the centrifuge is ejected at the edge of the opening, while at the same time in the central region of the opening, the centrifuge can be charged.
- the opening is formed large enough for both functions anyway, because the centrifuge widens conically towards the opening.
- the ejection and charging opening is arranged on the side facing the interior of the dishwasher side of the centrifuge, so that the water to be purified passes only gravity driven into the interior of the centrifuge.
- the centrifuge offers a maximum inlet cross-section, which maximizes its performance.
- the feed opening upstream of a sieve of at least the same size upstream which is arranged coaxially to the centrifuge. It is essential that in a centric view of the feed opening of the centrifuge this is completely covered by the sieve. However, it does not close the feed opening, since it also serves as an ejection opening. There is a gap between the sieve and the feed opening as a passage for the sieve residue of the centrifuge. As a result, the rinsing solution can reach the centrifuge by the shortest route through the sieve.
- a fine sieve is selected as the sieve covering, then its mesh size must be such that the sieve passage no longer has to be processed by the shredder in order to be able to be diverted from the drain pump. Therefore, the dirty water that passes through the fine screen, bypassing the crusher can be fed immediately to the centrifuge.
- a friction surface is formed on one of the ejection openings of the centrifuge opposite bottom surface. It acts together with a fixed stop preferably at the lower end of a projecting into the centrifuge quiver-shaped portion of the coarse screen as a crusher.
- the stopper may be annular and form the lower end of the quiver-shaped portion. In addition, it may have one or more ribs extending in the plane of the lower end of the cup-shaped portion substantially along its diameter.
- the friction surface is fully equipped with teeth that protrude into a narrow gap that define the stop and the friction surface together.
- the sieve residues of the coarse sieve are on the rapidly rotating friction surface in the manner of a vegetable juicer crushed in the gap between the friction surface and stop and urged centrifugal force through an annular gap between the annular portion of the stop and the friction surface in the centrifuge.
- the presence of water facilitates this process by softening the sieve residues, but it is not absolutely necessary. Due to the described construction, a particularly compact assembly of centrifuge and shredder is specified. The comminution thus advantageously takes place at the lowest and narrowest point of the conical centrifuge, so that the comminuted material to be screened has to take the maximum path over the microsieve before it is ejected.
- the comminution takes place up to a particle size that can still be absorbed by the drain pump.
- objects that have passed the coarse or fine sieve can still not be pumped out of the suds pump. These are especially long, thin objects, such. Toothpick.
- a pump sump which is separated by a trap from the inlet of the drain pump. This once again a filtration of the water is achieved, which prevents a functional impairment of the drain pump.
- An advantageous embodiment of the invention therefore provides a revision flap, via which the pump sump is accessible.
- a suction cap is arranged upstream of the circulation pump, which prevents the formation of a flow funnel in the sucked and cleaned rinsing liquor.
- the suction cap ensures that the circulation pump does not suck in air, thus increasing the throughput and the efficiency of the circulation pump.
- the object is achieved in the aforementioned method in that at the same time reached by the coarse sieve food scraps and the like and crushed by a Lye pump be disposed of.
- the inventive method realizes the principle of crushing substantial parts of the screenings so far that it can be removed from the drain pump without damage. This eliminates the need to clean the sieves of Siebschreibêtn as much as possible.
- the sieves In order to enable a continuous cleaning of the sieves with simultaneous recovery of the purified rinsing liquor, the sieves must be cleaned. This can be done mechanically or chemically.
- An advantageous embodiment of the invention therefore provides that the microsieve is cleaned by centrifugal forces. This makes it possible to clean the microsieve, in particular without tools, which in turn could cause wear or damage to the microsieve. Likewise, it is possible to dispense with chemical agents which would have to be removed again from the rinsing liquor in a further step.
- FIG. 2 shows a section through the right-angled section of FIG
- FIG. 1 shows a sectional view of a self-cleaning sieve system according to the invention. It is arranged substantially below a bottom plate 2, which forms the lower end of an interior or rinsing container (not shown) of a dishwasher. It is funnel-shaped and has a very flat slope towards a central filter inlet 3.
- the filter inlet 3 is formed by a coarse screen 4 and a fine screen 5.
- the coarse sieve 4 comprises on its upper side facing the dishwasher interior an annular peripheral handle 6. With the aid of the handle 6, the coarse sieve 4 can be removed.
- the filter inlet 3 forms the upper end face of a cylindrical pump pot 7.
- a Ums- roller pump and an intake 9 of a drain pump are arranged.
- a motor 11 is arranged, which drives a friction disc 13 via a shaft 12.
- a filter inlet 3 towards conically expanding lateral surface of a centrifuge 15 is arranged.
- the lateral surface 14 of the centrifuge 15 is preferably formed by a microsieve 14.
- the centrifuge 15 protrudes from the filter inlet 3, starting a quiver 16, which is a conical continuation of the fine sieve 5.
- the upper end of the holder 16 forms the coarse filter 4 with the handle 6.
- the lateral surface of the holder 16 opens into a stop ring 17, which has approximately the size of the friction plate 13.
- the intake manifold 8 of the circulating pump is covered about half of its diameter by a projecting into the sump 7 suction cap 18. It prevents the operation of the circulating pump forms an intake or flow funnel, which cause a suction of air and thus reduce the efficiency of the circulation pump.
- the intake 9 of the drain pump is separated from the sump 7 by a trap 19. It prevents so much particles from getting into the suds pump that can not process them. To clean the trap 19 is provided as access a not shown inspection flap.
- the centrifuge 15 is annularly surrounded by a discharge surface 20 which extends between the microsieve 13 of the centrifuge 15 and the inner surface of the pump pot 7 from the side of the circulation pump obliquely downwards in the direction of the drain pump and ends there in a sump pump 21 in front of the trap 19 ,
- the quiver 16 includes two ribs 22, which are arranged offset one above the other and slightly overlap each other.
- the upper of the two ribs ribs and is inclined from the outer surface of the quiver 16 to a central axis inwardly, the lower from the central axis to the outer surface to the outside. For clarity, they are not shown in Figure 2. They serve to absorb washing-active solids such as detergent tablets, so that they dissolve in the water stream as intended and can develop their effect successively.
- contaminated rinsing liquor passes either through the openings of the fine sieve 5 or through the coarse sieve 4 into the interior of the sump 7.
- Grobsieb 4 and Feinsieb 5 together cover a feed opening of the centrifuge 15, which is bounded by an edge 23.
- Rinse liquor which passes through the fine sieve 5, passes directly into the centrifuge 15, bypassing the bowl 16. It does not need to be routed through the quiver 16 in the crusher, because the mesh size of the fine screen 5 is formed so that particles that pass the fine screen 5, can not be caught by the trap 19 and discharged from the drain pump without malfunction. Dirt particles which are not transmitted by the fine sieve 5 reach the coarse sieve 4.
- the mesh size of the coarse sieve 4 is in turn selected such that particles passing through the coarse sieve 4 can be processed by the friction disc 13.
- the particles After leaving the centrifuge 15 via its upper edge 23, the particles, now again following the force of gravity, fall onto the discharge surface 20. On the discharge surface 20, they are transported past the outside of the centrifuge 15 into the pump sump 21. There, after passing through the trap 19, they are fed from the drain pump to a sewage system.
- the rinse liquor which transports the dirt particles, follows in part the same way as these. However, when it reaches the centrifuge 15, it is pressed onto the lateral surface of the centrifuge 15 in the form of a microsieve 13 as a result of the centrifugal force. Since the lateral surface 14 is formed by a microsieve 13, the water is here separated from the particles and pushed through the microsieve 13. If it passes through the microsieve 13 above the discharge surface 20, then the path of the dirt particles just described is achieved. However, if it is pressed below the discharge surface 20 through the microsieve, so the circulation pump sucks the filtered water and leads it back into the flushing. During operation, an inclined water level W, which is shown only in principle in FIG.
- centrifuge 15 sets the water in the sump 7 in strong rotation and thus drifts apart like a funnel.
- the centrifuge is generally operated both when the drain pump is switched on and when the circulating pump is switched on, but it can also be operated either only when the circulating pump is switched on or only when the drain pump is switched on. It is also possible that the centrifuge does not operate constantly, but only alternately, ie between operation / no operation, fulfills its function, eg. B. according to the degree of contamination of the rinsing liquor.
Landscapes
- Centrifugal Separators (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410060950 DE102004060950A1 (de) | 2004-12-17 | 2004-12-17 | Geschirrspülmaschine mit wartungsarmem Siebsystem |
PCT/EP2005/055423 WO2006063894A1 (de) | 2004-12-17 | 2005-10-20 | Geschirrspülmaschine mit wartungsarmem siebsystem |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1827197A1 true EP1827197A1 (de) | 2007-09-05 |
EP1827197B1 EP1827197B1 (de) | 2013-08-21 |
Family
ID=35717651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05801424.2A Not-in-force EP1827197B1 (de) | 2004-12-17 | 2005-10-20 | Geschirrspülmaschine mit wartungsarmem siebsystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US8808462B2 (de) |
EP (1) | EP1827197B1 (de) |
CN (1) | CN200987657Y (de) |
DE (1) | DE102004060950A1 (de) |
WO (1) | WO2006063894A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101822519A (zh) * | 2009-10-27 | 2010-09-08 | 南京乐金熊猫电器有限公司 | 洗碗机 |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007060193A1 (de) * | 2007-12-14 | 2009-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Wasserführendes Haushaltsgerät |
DE102007061036B4 (de) | 2007-12-18 | 2022-09-15 | BSH Hausgeräte GmbH | Wasserführendes Haushaltsgerät mit einem selbstreinigenden Filtersystem |
US8215322B2 (en) | 2008-12-22 | 2012-07-10 | Whirlpool Corporation | Dishwasher with soil removal |
US7980395B2 (en) * | 2009-01-29 | 2011-07-19 | Whirlpool Corporation | Cross-flow filtration system |
DE102009001600B4 (de) * | 2009-03-17 | 2011-06-01 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine |
US9918609B2 (en) * | 2009-12-21 | 2018-03-20 | Whirlpool Corporation | Rotating drum filter for a dishwashing machine |
US8627832B2 (en) | 2010-12-13 | 2014-01-14 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US9687135B2 (en) | 2009-12-21 | 2017-06-27 | Whirlpool Corporation | Automatic dishwasher with pump assembly |
US8746261B2 (en) * | 2009-12-21 | 2014-06-10 | Whirlpool Corporation | Rotating drum filter for a dishwashing machine |
US9119515B2 (en) | 2010-12-03 | 2015-09-01 | Whirlpool Corporation | Dishwasher with unitary wash module |
US8667974B2 (en) * | 2009-12-21 | 2014-03-11 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US8485367B2 (en) | 2010-05-28 | 2013-07-16 | General Electric Company | Fluid filtration apparatus for appliances |
US9668636B2 (en) | 2010-11-16 | 2017-06-06 | Whirlpool Corporation | Method and apparatus for dishwasher with common heating element for multiple treating chambers |
US9113766B2 (en) | 2010-11-16 | 2015-08-25 | Whirlpool Corporation | Method and apparatus for dishwasher with common heating element for multiple treating chambers |
US9034112B2 (en) | 2010-12-03 | 2015-05-19 | Whirlpool Corporation | Dishwasher with shared heater |
US20120138106A1 (en) * | 2010-12-03 | 2012-06-07 | Whirlpool Corporation | Dishwasher with single valve to fill multiple compartments |
US9107559B2 (en) * | 2011-05-16 | 2015-08-18 | Whirlpool Corporation | Dishwasher with filter assembly |
US8733376B2 (en) | 2011-05-16 | 2014-05-27 | Whirlpool Corporation | Dishwasher with filter assembly |
US9010344B2 (en) | 2011-06-20 | 2015-04-21 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US20120318296A1 (en) * | 2011-06-20 | 2012-12-20 | Whirlpool Corporation | Ultra micron filter for a dishwasher |
US9861251B2 (en) | 2011-06-20 | 2018-01-09 | Whirlpool Corporation | Filter with artificial boundary for a dishwashing machine |
US9005369B2 (en) | 2011-06-20 | 2015-04-14 | Whirlpool Corporation | Filter assembly for a dishwasher |
US9265401B2 (en) | 2011-06-20 | 2016-02-23 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US9301667B2 (en) * | 2012-02-27 | 2016-04-05 | Whirlpool Corporation | Soil chopping system for a dishwasher |
US9730570B2 (en) | 2012-05-30 | 2017-08-15 | Whirlpool Corporation | Reduced sound with a rotating filter for a dishwasher |
US9237836B2 (en) | 2012-05-30 | 2016-01-19 | Whirlpool Corporation | Rotating filter for a dishwasher |
US9532700B2 (en) | 2012-06-01 | 2017-01-03 | Whirlpool Corporation | Dishwasher with overflow conduit |
US9833120B2 (en) | 2012-06-01 | 2017-12-05 | Whirlpool Corporation | Heating air for drying dishes in a dishwasher using an in-line wash liquid heater |
US9451862B2 (en) | 2012-06-01 | 2016-09-27 | Whirlpool Corporation | Dishwasher with unitary wash module |
US9554688B2 (en) | 2012-10-23 | 2017-01-31 | Whirlpool Corporation | Rotating filter for a dishwasher and methods of cleaning a rotating filter |
US9655495B2 (en) | 2012-12-06 | 2017-05-23 | Whirlpool Corporation | Dishwasher including an inclined grate for filtration |
US20140283927A1 (en) * | 2013-03-21 | 2014-09-25 | Seven Hour Drive, LLC | Auxiliary gray water source device for commercial kitchens |
US9596973B2 (en) * | 2013-03-21 | 2017-03-21 | Seven Hour Drive, LLC | Auxiliary gray water source device for commercial kitchens |
US10105033B2 (en) | 2013-03-21 | 2018-10-23 | Seven Hour Drive, LLC | Auxiliary gray water source device for commercial kitchens |
CN105662304B (zh) * | 2015-12-31 | 2019-04-02 | 卢小平 | 碎渣-排水联动装置和洗碗机 |
CN106308715A (zh) * | 2016-08-20 | 2017-01-11 | 刘擂 | 二手厨具清洗装置 |
US11478121B1 (en) | 2021-06-29 | 2022-10-25 | Midea Group Co., Ltd. | Filtration assembly with grinding mechanism |
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DE4131914C2 (de) * | 1991-09-25 | 1997-09-18 | Aeg Hausgeraete Gmbh | Siebkombination für Haushalt-Geschirrspülmaschinen |
US5770058A (en) * | 1995-09-29 | 1998-06-23 | Whirlpool Corporation | Centrifugal separator |
ITPN20010034A1 (it) * | 2001-05-08 | 2002-11-08 | Electrolux Zanussi Elettrodome | Lavastoviglie con tritarifiuti |
US7146992B2 (en) * | 2002-07-02 | 2006-12-12 | Maytag Corporation | Dishwasher pump and filtration system |
KR100441019B1 (ko) * | 2002-07-09 | 2004-07-21 | 삼성전자주식회사 | 식기세척기 |
DE60206490T2 (de) | 2002-07-31 | 2006-05-18 | Candy S.P.A., Monza | Geschirrspülmaschine mit durch den Spülwasserstrom rotierbarer Filter- und Zerkleinerungsvorrichtung |
-
2004
- 2004-12-17 DE DE200410060950 patent/DE102004060950A1/de not_active Withdrawn
-
2005
- 2005-10-20 EP EP05801424.2A patent/EP1827197B1/de not_active Not-in-force
- 2005-10-20 WO PCT/EP2005/055423 patent/WO2006063894A1/de active Application Filing
- 2005-10-20 US US11/791,904 patent/US8808462B2/en not_active Expired - Fee Related
- 2005-10-28 CN CN 200520136913 patent/CN200987657Y/zh not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
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See references of WO2006063894A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101822519A (zh) * | 2009-10-27 | 2010-09-08 | 南京乐金熊猫电器有限公司 | 洗碗机 |
CN101822519B (zh) * | 2009-10-27 | 2012-09-19 | 南京乐金熊猫电器有限公司 | 洗碗机 |
Also Published As
Publication number | Publication date |
---|---|
US20080116135A1 (en) | 2008-05-22 |
DE102004060950A1 (de) | 2006-06-29 |
WO2006063894A1 (de) | 2006-06-22 |
US8808462B2 (en) | 2014-08-19 |
CN200987657Y (zh) | 2007-12-12 |
EP1827197B1 (de) | 2013-08-21 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
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