WO2003045601A1 - Vorrichtung zur herstellung eines rohres - Google Patents
Vorrichtung zur herstellung eines rohres Download PDFInfo
- Publication number
- WO2003045601A1 WO2003045601A1 PCT/EP2002/011665 EP0211665W WO03045601A1 WO 2003045601 A1 WO2003045601 A1 WO 2003045601A1 EP 0211665 W EP0211665 W EP 0211665W WO 03045601 A1 WO03045601 A1 WO 03045601A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- unit
- rollers
- crowning
- rolling
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0807—Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
Definitions
- the invention relates to a device for producing a cross-sectionally polygonal, preferably rectangular tube, which has a tube welding unit in which the tube is formed from a flat metal band and this is welded at the resulting interface, and to the tube welding unit in the conveying direction of the tube subsequent rolling unit, which essentially rolls the tube into the desired, cross-sectionally polygonal contour.
- DE-AS 12 89 814 describes how a tube is formed from a metal strip that is fed to a pipe welding system. To complete the pipe, the tubular metal strip must be welded to the resulting seam.
- DE-OS 19 23 241 and DE 32 12 365 C2 contain constructive details on the design of the required rollers that hold the tube during welding and the control of the welding beam.
- a tube with a rectangular cross section can be formed from the welded tube, which is still circular in cross section, in a subsequent rolling process.
- Correspondingly shaped pairs of rollers act on the tube; As a rule, the roller pairs are arranged in a number of calibration stands which are arranged one after the other in the conveying direction of the tube. The aim is to shape the tube so that it ideally takes on the desired contour, for example the rectangular shape.
- the tube material has a tendency to bulge due to its internal tensions, so that the desired rectangular contour does not result; rather, the sides of the rectangle, especially the longer sides, are at least slightly convexly curved outwards, which means a shape deviation compared to the desired contour.
- the invention is therefore based on the object of further developing a device of the type mentioned at the outset in such a way that the disadvantages described are eliminated.
- the solution to this problem by the invention is characterized in that the rolling unit is followed by a crowning roller unit in the conveying direction of the tube, with which at least two opposite tube sides can be rolled with a pair of convex convex rollers.
- the invention is therefore aimed at counteracting the tendency of the tube sides to bulge out by calibrating the polygonal, in particular rectangular, tube with convex crowning rollers.
- the aim is to roll the pipe sides in such a concave manner that the concavity embossed in this respect on the one hand and the tendency in the pipe to bulge on the other hand cancel each other out, so that overall an ideally polygonal, in particular rectangular, pipe is created in cross section.
- the manufactured polygonal or rectangular tube advantageously has exactly the desired contour; unwanted bulging pages are no longer available. It is preferably provided that the rolling unit is followed by a straightening unit in the conveying direction of the tube, with which the welded tube can be straightened in its longitudinal direction in a manner known per se.
- the crowning roller unit can be arranged in the region of the straightening unit, viewed in the conveying direction of the tube. Alternatively, it is also possible to arrange this unit between the rolling unit and the straightening unit.
- the crowning roller unit has means which guide it in a direction transverse to the longitudinal direction of the tube in such a way that it exerts no or only minimal forces on the tube which could deflect the tube transverse to its longitudinal direction.
- the background to this configuration is that the precision and efficiency of the straightening process suffers when, in addition to the straightening forces, additional forces act on the tube that are to be expected primarily from the crowning and rolling process. So that this process does not interfere with the straightening process, the crowning unit is designed to be “floating”, the crowning rollers are consequently tracked depending on the tube deflection - due to the straightening of the tube - following the tube deflection without load.
- the means for guiding the crowning roller unit preferably have at least one movement unit with which the crowning roller unit can be moved transversely to the longitudinal direction of the tube.
- These means particularly preferably represent a control loop consisting of at least one sensor, a control and at least one movement unit.
- An electrical actuating element can be provided as the movement unit, in particular one with an electric motor and a transmission.
- a threaded spindle for linear movement of the rollers can be used as a gear be provided.
- a hydraulic actuating element in particular a piston-cylinder system, can also be used as the movement unit.
- setting means can be provided with which the radial distance of the crowning rollers can be adjusted.
- the means for guiding the crown roll unit can advantageously move the rolls relative to a stationary crown roll stand or roll stand.
- the crowning roller unit has at least two pairs of rollers, the axes of which are rotated at right angles to one another for rolling the rectangular tube.
- FIG. 1 schematically shows the structure of a device for producing a rectangular tube
- FIG. 2 shows a slightly modified construction of the device according to FIG. 1,
- Fig. 3 shows the section through a crowning roller unit in the conveying direction of the tube
- FIG. 4 shows an alternative embodiment to FIG. 3.
- FIG. 1 schematically shows the structure of a device 1 on which a rectangular tube 2 is manufactured.
- the device 1 is from the left - in the conveying direction device R - a flat metal strip 19 fed. This is bent in a known manner, not shown in more detail, to form a tube with a circular cross section, which is welded in the tube welding unit 3, ie the metal strip bent to the tube is welded at the resulting interface by means of the welding device 20, which is shown only very schematically.
- the tube 2 is guided through the rollers 21.
- the finished tube 2 which is circular in cross section, which is indicated schematically in FIG. 1.
- This tube 2 is now to be formed into a rectangular tube.
- the rolling unit 4 is provided, which consists of several - in Fig. 1 of two - calibration roller units, which are arranged one behind the other in the conveying direction R.
- Two interacting calibration roller pairs 22, 23, 22 'and 23' gradually form the desired rectangular profile up to the end of the roller unit 4, which is again indicated schematically in FIG. 1. In the exemplary embodiment, this is done by four pairs of rollers 22, 23, 22 'and 23', which are each rotated by 90 °.
- the straightening unit 10 in the present case consists of an element which can exert a force on the tube largely perpendicular to the longitudinal axis L of the tube 2. As can be seen in FIG. 1, the tube 2 is thereby deflected perpendicular to the conveying direction R.
- the tube 2 Since the tube 2 is held by the roller pairs 22 and 23 'of the last calibration stands (viewed in the conveying direction R), a deflection of the tube 2 by the straightening unit 10 induces a bending deformation in the tube 2 which counteracts the bending already contained in the tube is. Overall, the tube is "straight bent". The straightening process takes place in the two axes that are perpendicular to the longitudinal direction L of the tube 2 (only the bend around one axis is shown in FIG. 1). Furthermore, the straightening process takes place automatically, although there is no further illustration of this in FIG. 1. The straightening process corresponds to the general state of the art.
- the straightening unit 10 can also consist of several pressing elements 10a, 10b, 10c, which can exert forces perpendicular to the ideal longitudinal axis L on the pipe 2 in order to bend it against the bend contained in the pipe and so on to straighten.
- the forces exerted by the pressing elements 10a, 10b, 10c are indicated schematically by arrows.
- the bend is shown only around one axis; in the same way, the tube 2 can also be bent about an axis perpendicular to it and thereby also directed in this axis.
- a crowning roller unit 5 is provided.
- the crowning roller unit 5 can also be arranged in the region of the straightening unit 10.
- the crowning roller unit 5 has two crowning rollers 8 and 9, each of which has a spherical, convex shape.
- the crowning of the crowning rollers 8, 9 is selected empirically or by calculations such that the concavity induced by the rollers 8, 9 in the tube 2 is so great that it balances itself out with the bulging of the tube sides 6, 7. Total results a precisely straight contour of the tube sides 6 and 7, as is desired.
- the crowning rollers 8, 9 are “floating” in relation to the longitudinal axis L of the tube. No forces are therefore exerted perpendicularly on the longitudinal axis L of the tube 2 by these rollers 8, 9.
- means 11 are provided for guiding the crowning roller unit 5 perpendicular to the longitudinal axis L of the tube 2.
- These means are a sensor 14 for recording the current (vertical) deflection of the tube 2 from the ideal line 24 (see FIG. 1) and a movement unit 12 for vertically moving the crowning rollers 8, 9.
- Sensor 14 and movement unit 12 are connected to one another via a control 16. If the sensor 14 detects a deflection of the tube 2 from the ideal line 24, the regulation causes the crowning rollers 8, 9 to be moved vertically relative to their stationary crowning mill stand 18, so that none of the rollers 8, 9 are directed to the longitudinal axis L vertical forces are transmitted to tube 2. As a result, the straightening process can be carried out unadulterated and thus efficiently.
- the crowning rollers 8, 9 move in two axes: both a sensor 14 for recording the vertical deflection of the tube 2 and a sensor 15 for recording the horizontal deflection are provided.
- the control 16 controls, based on the values recorded by the sensors 14 and 15, two movement units 12 and 13, so that the cambering rollers 8, 9 are tracked both with vertical and with horizontal deflections.
- the force exerted by the crowning rollers 8, 9 on the tube is predetermined by adjusting means 17 (see FIG. 3). These position the two rollers 8 and 9 radially relative to one another.
- the longer pipe sides in a rectangular pipe tend to bulge.
- the shorter sides of the tube can also be affected by the bulge.
- the rectangular tube can also be cambered on all four sides 6, 6 ', 7, 7' of the tube 2.
- the tube 2 is contacted by a total of four crown rollers 8, 9 and 8 ', 9' in the illustrated case; all pipe sides 6, 7 and 6 ', T are thereby rolled concave. It is shown schematically again that the crowning rolls 8, 9, 8 ', 9' are tracked relative to the stationary crowning roll stand or roll stand 18 according to the current pipe deflection.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Laminated Bodies (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50203594T DE50203594D1 (de) | 2001-10-27 | 2002-10-18 | Vorrichtung zur herstellung eines rohres |
US10/494,413 US7748597B2 (en) | 2001-10-27 | 2002-10-18 | Device for production of a tube |
JP2003547091A JP3860810B2 (ja) | 2001-10-27 | 2002-10-18 | 管製造装置 |
AT02781267T ATE299053T1 (de) | 2001-10-27 | 2002-10-18 | Vorrichtung zur herstellung eines rohres |
AU2002349367A AU2002349367A1 (en) | 2001-10-27 | 2002-10-18 | Device for production of a tube |
EP02781267A EP1448323B1 (de) | 2001-10-27 | 2002-10-18 | Vorrichtung zur herstellung eines rohres |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10153144A DE10153144C1 (de) | 2001-10-27 | 2001-10-27 | Vorrichtung zur Herstellung eines Rohres |
DE10153144.3 | 2001-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003045601A1 true WO2003045601A1 (de) | 2003-06-05 |
Family
ID=7703969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/011665 WO2003045601A1 (de) | 2001-10-27 | 2002-10-18 | Vorrichtung zur herstellung eines rohres |
Country Status (8)
Country | Link |
---|---|
US (1) | US7748597B2 (de) |
EP (1) | EP1448323B1 (de) |
JP (1) | JP3860810B2 (de) |
AT (1) | ATE299053T1 (de) |
AU (1) | AU2002349367A1 (de) |
DE (2) | DE10153144C1 (de) |
ES (1) | ES2243769T3 (de) |
WO (1) | WO2003045601A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8863565B2 (en) * | 2005-03-03 | 2014-10-21 | Nippon Steel & Sumitomo Metal Corporation | Three-dimensionally bending machine, bending-equipment line, and bent product |
DE102005022244B4 (de) * | 2005-05-13 | 2007-07-19 | Eroform Edelstahl Gmbh | Führungs- und Verformungssystem, dessen Verwendung sowie Verfahren zur Herstellung von geschweißten Rohren |
IT1394852B1 (it) * | 2009-07-21 | 2012-07-20 | Olimpia 80 Srl | Macchina a geometria lineare variabile per formare in continua tubi quadri |
ES2682349T3 (es) | 2010-09-23 | 2018-09-20 | Shape Corp. | Aparato y método para formar una viga tubular con una única pata central |
US9126257B2 (en) | 2011-04-04 | 2015-09-08 | Batesville Services, Inc. | Method of forming sheet metal casket shell |
US9046354B2 (en) * | 2013-02-27 | 2015-06-02 | Summit Esp, Llc | Apparatus, system and method for measuring straightness of components of rotating assemblies |
CN103965926B (zh) * | 2014-05-13 | 2015-12-30 | 攀钢集团西昌钢钒有限公司 | 捣固锤在线校正装置及方法 |
TWM595548U (zh) * | 2020-01-16 | 2020-05-21 | 詠基工業股份有限公司 | 管件整直結構 |
CN112718927A (zh) * | 2020-12-03 | 2021-04-30 | 天津亿利通工贸有限公司 | 一种钢管生产用管坯板边内凹矫正设备 |
CN112676403B (zh) * | 2020-12-04 | 2021-09-03 | 哈尔滨工业大学 | 一种带校形功能的推弯装置及其工作方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB878713A (en) * | 1960-03-09 | 1961-10-04 | Continental Can Co | Can body and method of forming same |
FR1450279A (fr) * | 1965-10-19 | 1966-05-06 | Perfectionnements aux appareils de conformation de tubes | |
US5309746A (en) * | 1993-01-28 | 1994-05-10 | Abbey Etna Machine Company | Automatic tube straightening system |
US5868299A (en) * | 1997-05-05 | 1999-02-09 | Abbey Etna Machine Company | Method and apparatus for maintaining seam alignment in seam welded tubes |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1289814B (de) * | 1969-02-27 | |||
DE1923241A1 (de) | 1969-05-07 | 1970-11-19 | Demag Ag | Vorrichtung zum kontinuierlichen Laengsnahtschweissen von Rohren |
US3636903A (en) * | 1970-02-19 | 1972-01-25 | Snappy Inc | Rectangular-duct forming machine |
DE7211073U (de) * | 1971-05-11 | 1974-07-25 | Voeest Ag | Vorrichtung zum Herstellen von Einnahtformrohren |
JPS5510349A (en) * | 1978-07-07 | 1980-01-24 | Nakajima:Kk | Production of large-diameter square steel tube |
DE3212365C2 (de) * | 1982-03-31 | 1984-06-07 | Mannesmann AG, 4000 Düsseldorf | Schweißrollenbock für das Hochfrequenzschweißen von Rohren |
DE3529160A1 (de) * | 1985-08-14 | 1987-02-26 | Nippon Steel Corp | Formwalzvorrichtung |
JPH0729147B2 (ja) * | 1988-09-09 | 1995-04-05 | 日新製鋼株式会社 | 薄肉金属管の製造方法 |
AT399674B (de) * | 1992-08-03 | 1995-06-26 | Voest Alpine Ind Anlagen | Vorrichtung zum kontinuierlichen umformen eines metallischen rohres |
US5802903A (en) * | 1997-01-28 | 1998-09-08 | Nakajima Steel Pipe Co., Ltd | Manufacturing method for angled steel pipes |
-
2001
- 2001-10-27 DE DE10153144A patent/DE10153144C1/de not_active Expired - Fee Related
-
2002
- 2002-10-18 ES ES02781267T patent/ES2243769T3/es not_active Expired - Lifetime
- 2002-10-18 US US10/494,413 patent/US7748597B2/en not_active Expired - Fee Related
- 2002-10-18 AU AU2002349367A patent/AU2002349367A1/en not_active Abandoned
- 2002-10-18 AT AT02781267T patent/ATE299053T1/de active
- 2002-10-18 EP EP02781267A patent/EP1448323B1/de not_active Expired - Lifetime
- 2002-10-18 DE DE50203594T patent/DE50203594D1/de not_active Expired - Lifetime
- 2002-10-18 JP JP2003547091A patent/JP3860810B2/ja not_active Expired - Fee Related
- 2002-10-18 WO PCT/EP2002/011665 patent/WO2003045601A1/de active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB878713A (en) * | 1960-03-09 | 1961-10-04 | Continental Can Co | Can body and method of forming same |
FR1450279A (fr) * | 1965-10-19 | 1966-05-06 | Perfectionnements aux appareils de conformation de tubes | |
US5309746A (en) * | 1993-01-28 | 1994-05-10 | Abbey Etna Machine Company | Automatic tube straightening system |
US5868299A (en) * | 1997-05-05 | 1999-02-09 | Abbey Etna Machine Company | Method and apparatus for maintaining seam alignment in seam welded tubes |
Also Published As
Publication number | Publication date |
---|---|
ATE299053T1 (de) | 2005-07-15 |
DE50203594D1 (de) | 2005-08-11 |
DE10153144C1 (de) | 2003-05-28 |
US20050082345A1 (en) | 2005-04-21 |
AU2002349367A1 (en) | 2003-06-10 |
EP1448323A1 (de) | 2004-08-25 |
EP1448323B1 (de) | 2005-07-06 |
JP3860810B2 (ja) | 2006-12-20 |
JP2005510361A (ja) | 2005-04-21 |
ES2243769T3 (es) | 2005-12-01 |
US7748597B2 (en) | 2010-07-06 |
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