WO1998006912A1 - Tragendes plattenelement aus holz für deckenkonstruktionen oder für den brückenbau sowie verwendung einer schraube zum verbinden von brettern zu einem plattenelement - Google Patents
Tragendes plattenelement aus holz für deckenkonstruktionen oder für den brückenbau sowie verwendung einer schraube zum verbinden von brettern zu einem plattenelement Download PDFInfo
- Publication number
- WO1998006912A1 WO1998006912A1 PCT/EP1997/004297 EP9704297W WO9806912A1 WO 1998006912 A1 WO1998006912 A1 WO 1998006912A1 EP 9704297 W EP9704297 W EP 9704297W WO 9806912 A1 WO9806912 A1 WO 9806912A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- boards
- screws
- screwed
- acute angle
- successive
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/12—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood
- E04C2/14—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood reinforced
Definitions
- the invention relates to a load-bearing panel element made of wood for ceiling constructions or for bridge construction, consisting of a plurality of individual layers of boards, which stand upright transversely to the plane of the plate element and preferably lead over the entire length of the plate element and which are connected to one another by screw fastenings, and further
- the invention relates to the use of a screw for connecting boards to a plate element.
- Load-bearing plate elements have already become known (US-A-1 944 237), in which a multiplicity of upright boards are connected to one another by means of tie rods passing through all the boards.
- the individual boards are connected to one another by means of nails for temporary provisional mounting when building up such a stack.
- transversely prestressed board stacks the forces between the individual boards are transmitted by friction, which requires a constant contact pressure. The transverse preload must therefore always be guaranteed up to a certain level. Since wood tends to shrink and creep, care must always be taken to ensure that the tension rods can be tightened.
- the present invention has now set itself the task of creating a load-bearing plate element made of wood of the type mentioned, which can be made any length or width, the forces impinging on individual layers of boards when loading this plate element to the greatest possible width of the plate element can be transmitted.
- the individual boards are connected to one another at least partially by screws screwed in at an acute angle to their surface and at least approximately in a plane lying transversely to the longitudinal extent of the plate element, which lead over at least two successive boards.
- screws with intersecting directions are screwed into successive boards or into every other board in spaced successive planes lying transversely to the boards. This measure guarantees that every position of a board practically on both sides in these fastening areas is hooked in the form of a hook on the next board in order to be able to transmit large forces to a large area of a plate element.
- the screws which are screwed in at right angles to the surface of the boards are alternately screwed into every second board and lead over three layers of boards. This means that the fastening between the individual boards is always repeated, since, for example, the screws screwed in at an acute angle lead over two boards and the screws screwed in at right angles each over three layers of boards. Optimal power transmission to large areas of the wooden panel element can thus be achieved.
- screws which are screwed in at an acute angle and at right angles to the surface of the boards are arranged in a predetermined grid dimension in succession and in two planes located at a short distance from one another.
- the screws in one of the planes lying in the grid dimension are always screwed in at an acute angle in one direction and in the other plane are inclined at an acute angle in the other direction, two intersecting each other on each surface of boards per grid dimension Screws are screwed in, which, however, lie in the planes that follow each other with a short distance.
- two screws are therefore practically always screwed into acute-angled planes that are close together, one at an angle from above downwards and once from below diagonally upwards.
- An advantageous embodiment provides that screws aligned at right angles to the surface of the board are screwed into every second of the successive boards, wherein the screw screwed into each second board at right angles to the surface each has the other assigned to the plane lying close to it .
- This offers the possibility that the screws screwed in at right angles to the surface each overlap each other in the immediately adjacent planes by a corresponding amount, without a continuous fastening being provided.
- the screws screwed in at right angles to the surface form a type of tensioning element of the known type which extends over the entire width of the plate element, but here only short screws are used, which alternately overlap one another at their ends lying parallel to one another. In this way, however, they are guided continuously over the entire width of the supporting plate element.
- a particularly advantageous embodiment is provided if the screws screwed in at an acute angle to the surface of the boards and the screws screwed in at right angles to the surface of the boards have the same length, the screws screwed in at an acute angle in each case over two adjacent boards and the screws screwed in at right angles to the surface of the boards are led over three successive boards.
- These measures only require one screw to be used, which can be used both for screwing in at an acute angle and for screwing in at right angles to the surface. Since only a single fastening element is necessary, the assembly of the plate element is also made considerably easier.
- a particularly advantageous embodiment for the assembly of the plate element provides that fixing screws for temporary mutual fixing of successive boards are screwed in each in the central region of the grid dimension and also based on the height of the plate element.
- the fixing screws provided here hold the boards one after the other until the screws that are screwed in at an acute angle and at right angles to the surface are placed.
- These fixing screws provided as assembly aids remain in the load-bearing plate element, but have no influence on the load-bearing capacity of the plate element.
- the screw used according to the invention is characterized in that a threaded section is provided on a shaft at least at its two end regions, either the two threaded sections being coordinated in their course or a continuous threaded section being provided over the entire length or two sections of different diameters follow each other, which have the same thread pitch.
- FIG. 1 shows a section through a partial structure of a bridge formed with the plate element according to the invention
- FIG. 2 shows an oblique view of a partial section of a plate element
- 3 shows a section through the entire structure of a bridge produced with the plate element according to the invention
- Figure 4 is a vertical section through the plate element along the line IV-IV in Figure 2 with a schematically illustrated arrangement of the screws used.
- FIG. 5 shows a view of the surface of an inserted board with a schematically illustrated arrangement of the inserted screws
- FIG. 6 shows a plan view of a section of a plate element, screws being shown schematically at right angles to the surface of the boards;
- FIG. 7 shows an identical top view of a section of the plate element, the screws at an acute angle being shown schematically;
- FIG. 8 shows a vertical section through a partial area of the plate element with an inserted screw which is screwed in at right angles to the surface of a board;
- FIG 9 shows a vertical section through a plate element in the region of screws screwed in at an acute angle to the surface of the boards.
- FIG. 1 and 3 a possible construction of a bridge made of wood is shown.
- the bridge plate is formed by a load-bearing plate element 1 made of wood, the construction and construction of which will be explained in more detail below.
- a moist insulation 2, over which the bridge covering 3 is then laid, is applied to the plate element 1.
- the Schrammbord 4 is also made of wood.
- railing posts 5 are fastened by screws 6 and 7.
- a handrail 8, which can also consist of wood, is applied and fastened by screws 9.
- the handrail 8 can additionally have a copper cover 10.
- Fig. 3 a section through such a bridge is shown in its longitudinal extent. Thresholds 13 made of wood are placed on corresponding foundation parts 11, 12.
- Support beams 16 are supported via corresponding uprights 14 and struts 15.
- the actual beam 18 forming the support can be adjusted in height by means of wedges 17.
- the plate element 1 then lies on the bar 18.
- the further road connects to the corresponding connecting bar 9.
- Screeds 20 create a delimitation to the solid material, with a corresponding backfilling 21, a casing 22 and a closing threshold placed on a foundation 23, a corresponding delimitation from the fastened part to the creek bed to be bridged.
- the load-bearing plate element 1 can be used not only for bridge construction, but also for ceiling constructions and, of course, if necessary, also for the construction of walls or the like.
- Each slab element consists of a plurality of individual layers of boards 25, which stand upright transversely to the plane of the slab element and preferably lead over the entire length of the slab element 1. Maximum strengths are achieved when the planks are made continuously over the entire length of the slab element. For certain applications - in particular for longer elements - it would also be possible, in addition to continuous or instead of continuous partial or complete boards, to provide only continuous boards over part of the length of the plate element, which boards are then connected to one another accordingly. It would also be possible to provide a large number of shorter elements, which however always overlap in the individual layers. It is entirely possible within the scope of the invention to use adhesives, e.g. Glue. However, thanks to the measures according to the invention for the mutual connection of the boards 25 to a plate element, this is not necessary.
- the measures according to the invention now lie in the special fastening of the individual boards 25 to form the supporting plate element made of wood.
- the individual boards 25 are connected to one another by screws 27 screwed in at an acute angle to their surface 26, wherein these screws screwed in at an acute angle lie at least approximately in a plane running transversely to the longitudinal extent of the plate element 1.
- the screws 27 are thus screwed in at an angle from top to bottom or from bottom to top.
- the screws 27 run over at least two successive boards 25. In successive boards 25 or, if necessary, only in every other board 25, screws are with intersecting directions in spaced-apart directions, Levels 29 and 39 lying transversely to the boards 25 are screwed in.
- screws 28 are provided, each of which has at least three successive ones Guide boards 25 and are inserted at right angles to the surface 26.
- the screws 28, as can be seen in particular in FIGS. 4 and 6, are arranged such that they are alternately screwed into every second board 25 and lead over three layers of boards 25.
- Screws 27 and 28 are screwed in at an acute angle and at right angles to the surface 26 of the boards 25 in a predetermined grid dimension R in succession and in two planes 29, 39 lying at a short distance A from one another.
- the screws 27 lying in one of the two planes 29, 39 are always screwed in at an acute angle in one direction and the screws in the other plane 29, 39 are inclined at an acute angle in the other direction.
- two intersecting screws 27 are provided on each surface 26 of boards 25 per grid dimension R, but these lie in the planes 29 and 39 which follow one another at a short distance A.
- screws 27 which are inclined at an acute angle in one direction and also near the upper board edge 30 and the lower board edge 31 are screwed in at right angles to the surface 26 of the boards 25 Screws 28 are provided.
- spacing A a framework-like arrangement of screws 27 and 28 is practically created, so that an optimal mutual fastening and load distribution is possible.
- 4 and 9 show in particular that the screws 27 screwed in at an acute angle to the surface 26 of the boards 25 form an angle ⁇ of approximately 45 ° with the surface 26, so that the one another cross in the closely successive planes 29, 39 - Zenden screws 27 are aligned at right angles to each other.
- FIG. 6 but also in FIG.
- screws 28 aligned at right angles to the surface 26 are screwed into every second one of the successive boards 25, the screw 28 screwed into each second board 25 being the other one, the one with the least Distance A adjacent level 29 or 39 is assigned.
- the screws 28 therefore always overlap at their end regions, but this overlap is present with the spacing A of the two planes 29, 39.
- the screws 27 screwed in at an acute angle and the screws 28 screwed in at right angles have the same length.
- the screws screwed in at an acute angle each lead over two adjacent boards 25 and the screws screwed in at right angles over three successive boards 25.
- the clear advantage, however, lies in the fact that screws 27 and screws 28 always use the same screws can be used. Therefore, only one type of screw is required when installing such a plate element, the same construction and length being chosen for the screws additionally required when building a bridge.
- the grid dimension R is adapted, the distance A of the two planes 29 and 39 also being adaptable to the different circumstances. Criteria for a special adaptation can be, for example, the span of such a plate element, the special load-bearing capacity of the plate, the type of wood used, but also the type of screws used.
- Fig. 5 shows that in the central area of the grid dimension R and also with respect to the height H of the plate element 1 fixing screws 32 are screwed in for temporary mutual fixing of successive boards 25.
- the fixing screws 32 form a kind of assembly aid in the manufacture of the plate element, ie the next board can be firmly connected to the preceding board or the section of the plate element that has already been manufactured at certain intervals, thus making it easier to screw in the screws 27 and 28.
- the fixing screws do not always have to be arranged in the central area of a grid dimension and in the central area in relation to the height H. This only ensures that the fixing screws 32 are not in the area or near the planes 29 and 39. 8 and 9, a special embodiment of screws 27 and 28 is shown.
- Two sections 34 and 35 of different diameters are provided on a shaft 33, each of which is provided with a threaded section 36, 37. Both thread sections have the same thread pitch. As a result, there is no mutual displacement of the successive boards 25 when screwing in. In addition, there is a guarantee that the thread section 37 will prevent the thread already produced by the threaded section 36 from being destroyed. In this context, it makes sense if the section 35 with the larger diameter has a core diameter which corresponds at least approximately to the external thread diameter of the section 34. It is thereby also possible for the threaded sections 36 and 37 to have the same thread pitch, but an exactly continuous thread need not be present over the entire length of the screw.
- an inner engagement 38 is formed for a screwing tool.
- a screw 27 or 28 therefore does not have a head projecting beyond the thread, so that no special forces are required to arrange the screw sunk on the surface of the respective board. If the screws are to be countersunk only a little, it is also possible. Use screws with a larger head, which allow a better attack by the screwing tools. Such screws can be equipped with a countersunk head, for example. Within the scope of the invention it would also be possible to arrange more than two sections 34, 35 of different shaft diameters in succession if this would contribute to an even better connection and mutual support of the successive boards 25.
Landscapes
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Floor Finish (AREA)
- Connection Of Plates (AREA)
- Bridges Or Land Bridges (AREA)
- Panels For Use In Building Construction (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Joining Of Building Structures In Genera (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Building Environments (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/230,753 US6256949B1 (en) | 1996-08-14 | 1997-08-07 | Supporting wooden panel element for constructing ceilings or bridges and use of a screw for connecting boards to form a panel element |
AU42981/97A AU4298197A (en) | 1996-08-14 | 1997-08-07 | Supporting wooden panel element for constructing ceilings or bridges and use of a screw for connecting boards to form panel element |
DE59703918T DE59703918D1 (de) | 1996-08-14 | 1997-08-07 | Tragendes plattenelement aus holz für deckenkonstruktionen oder für den brückenbau |
EP97918967A EP0918910B1 (de) | 1996-08-14 | 1997-08-07 | Tragendes plattenelement aus holz für deckenkonstruktionen oder für den brückenbau |
DK97918967T DK0918910T3 (da) | 1996-08-14 | 1997-08-07 | Bærende pladeelement af træ til loftskonstruktioner eller til brobygning |
PL97331243A PL187082B1 (pl) | 1996-08-14 | 1997-08-07 | Element płytowy, nośny z drewna do konstrukcji stropowych lub budowy mostów |
EA199900197A EA000546B1 (ru) | 1996-08-14 | 1997-08-07 | Несущий панельный элемент из дерева для потолочных конструкций или для строительства мостов и винт для соединения досок в панельный элемент |
AT97918967T ATE202610T1 (de) | 1996-08-14 | 1997-08-07 | Tragendes plattenelement aus holz für deckenkonstruktionen oder für den brückenbau |
CA002263997A CA2263997C (en) | 1996-08-14 | 1997-08-07 | Supporting wooden panel element for constructing ceilings or bridges and use of a screw for connecting boards to form a panel element |
SI9730167T SI0918910T1 (en) | 1996-08-14 | 1997-08-07 | Supporting wooden panel element for constructing ceilings or bridges |
BG103035A BG62896B1 (bg) | 1996-08-14 | 1998-12-23 | Носещ слоест плоскостен елемент от дърво с винтови свръзки |
NO19990661A NO319761B1 (no) | 1996-08-14 | 1999-02-12 | Baerende plateelelement av tre for takkonstruksjon eller for brobygging sa vel som anvendelse av en skrue for sammenbinding av planker til et plateelement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19632796A DE19632796C2 (de) | 1996-08-14 | 1996-08-14 | Tragendes Plattenelement aus Holz für Deckenkonstruktionen oder für den Brückenbau und Verwendung einer Schraube für die Herstellung von Plattenelementen |
DE19632796.2 | 1996-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998006912A1 true WO1998006912A1 (de) | 1998-02-19 |
Family
ID=7802639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/004297 WO1998006912A1 (de) | 1996-08-14 | 1997-08-07 | Tragendes plattenelement aus holz für deckenkonstruktionen oder für den brückenbau sowie verwendung einer schraube zum verbinden von brettern zu einem plattenelement |
Country Status (13)
Country | Link |
---|---|
US (1) | US6256949B1 (de) |
EP (1) | EP0918910B1 (de) |
AT (1) | ATE202610T1 (de) |
AU (1) | AU4298197A (de) |
BG (1) | BG62896B1 (de) |
CA (1) | CA2263997C (de) |
DE (2) | DE19632796C2 (de) |
DK (1) | DK0918910T3 (de) |
EA (1) | EA000546B1 (de) |
ES (1) | ES2160341T3 (de) |
NO (1) | NO319761B1 (de) |
PL (1) | PL187082B1 (de) |
WO (1) | WO1998006912A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011148116A2 (fr) | 2010-05-27 | 2011-12-01 | Laboratoire Idenov | Acide hyaluronique modifie, procede de fabrication et utilisations |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202007015302U1 (de) * | 2007-11-03 | 2009-03-19 | Hundegger, Hans | Dach-, Decken- oder Wandelement |
US10882048B2 (en) | 2016-07-11 | 2021-01-05 | Resource Fiber LLC | Apparatus and method for conditioning bamboo or vegetable cane fiber |
RU167860U1 (ru) * | 2016-09-14 | 2017-01-20 | Борис Леонидович Самохвалов | Многослойная стеновая панель |
RU2627434C1 (ru) * | 2016-09-14 | 2017-08-08 | Борис Леонидович Самохвалов | Многослойная стеновая панель |
RU172007U1 (ru) * | 2017-03-17 | 2017-06-26 | Борис Леонидович Самохвалов | Самонесущая панель |
US11175116B2 (en) | 2017-04-12 | 2021-11-16 | Resource Fiber LLC | Bamboo and/or vegetable cane fiber ballistic impact panel and process |
US10597863B2 (en) * | 2018-01-19 | 2020-03-24 | Resource Fiber LLC | Laminated bamboo platform and concrete composite slab system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1944237A (en) * | 1932-02-01 | 1934-01-23 | Edgar E Heineman | Laminated lumber and method of making the same |
US2439655A (en) * | 1944-03-16 | 1948-04-13 | Pittsburgh Screw & Bolt Compan | Spliced lumber |
FR1404294A (fr) * | 1964-08-12 | 1965-06-25 | D B Frampton & Company | Procédé de fabrication de panneaux composites à partir de panneaux élémentaires en bois maintenus assemblés par des goujons filetés |
DE19513729A1 (de) * | 1994-09-20 | 1996-03-28 | Hubert Schmid Baugeschaeft Gmb | Brettstapelelement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2244343A (en) * | 1938-11-07 | 1941-06-03 | Meyercord Agnes Adams | Joint and structure embodying the same |
DE842709C (de) * | 1951-10-31 | 1952-06-30 | Genageltes balkenformiges Holzbauglied | |
DE3117624C2 (de) * | 1981-05-05 | 1985-10-17 | J. Georg Bierbach Schraubenfabrik, 5990 Altena | Selbstformende Universalschraube |
DE3408048A1 (de) * | 1984-03-05 | 1985-09-12 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Mittels schrauben herstellbare verbindung von aus thermoplastischem kunststoff bestehenden formteilen |
US4932178A (en) * | 1989-05-05 | 1990-06-12 | Mozingo Ralph R | Compound timber-metal stressed decks |
DE29502068U1 (de) * | 1995-02-10 | 1996-06-13 | Gebrüder Kömmerling Kunststoffwerke GmbH, 66954 Pirmasens | Schraube, insbesondere für Fensterprofile aus Kunststoff |
-
1996
- 1996-08-14 DE DE19632796A patent/DE19632796C2/de not_active Expired - Fee Related
-
1997
- 1997-08-07 EA EA199900197A patent/EA000546B1/ru not_active IP Right Cessation
- 1997-08-07 WO PCT/EP1997/004297 patent/WO1998006912A1/de active IP Right Grant
- 1997-08-07 ES ES97918967T patent/ES2160341T3/es not_active Expired - Lifetime
- 1997-08-07 DE DE59703918T patent/DE59703918D1/de not_active Expired - Lifetime
- 1997-08-07 AT AT97918967T patent/ATE202610T1/de active
- 1997-08-07 US US09/230,753 patent/US6256949B1/en not_active Expired - Fee Related
- 1997-08-07 AU AU42981/97A patent/AU4298197A/en not_active Abandoned
- 1997-08-07 PL PL97331243A patent/PL187082B1/pl not_active IP Right Cessation
- 1997-08-07 DK DK97918967T patent/DK0918910T3/da active
- 1997-08-07 EP EP97918967A patent/EP0918910B1/de not_active Expired - Lifetime
- 1997-08-07 CA CA002263997A patent/CA2263997C/en not_active Expired - Fee Related
-
1998
- 1998-12-23 BG BG103035A patent/BG62896B1/bg unknown
-
1999
- 1999-02-12 NO NO19990661A patent/NO319761B1/no not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1944237A (en) * | 1932-02-01 | 1934-01-23 | Edgar E Heineman | Laminated lumber and method of making the same |
US2439655A (en) * | 1944-03-16 | 1948-04-13 | Pittsburgh Screw & Bolt Compan | Spliced lumber |
FR1404294A (fr) * | 1964-08-12 | 1965-06-25 | D B Frampton & Company | Procédé de fabrication de panneaux composites à partir de panneaux élémentaires en bois maintenus assemblés par des goujons filetés |
DE19513729A1 (de) * | 1994-09-20 | 1996-03-28 | Hubert Schmid Baugeschaeft Gmb | Brettstapelelement |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011148116A2 (fr) | 2010-05-27 | 2011-12-01 | Laboratoire Idenov | Acide hyaluronique modifie, procede de fabrication et utilisations |
Also Published As
Publication number | Publication date |
---|---|
DE19632796C2 (de) | 1998-07-16 |
AU4298197A (en) | 1998-03-06 |
NO319761B1 (no) | 2005-09-12 |
PL187082B1 (pl) | 2004-05-31 |
ES2160341T3 (es) | 2001-11-01 |
US6256949B1 (en) | 2001-07-10 |
EP0918910B1 (de) | 2001-06-27 |
CA2263997C (en) | 2002-01-22 |
EA000546B1 (ru) | 1999-10-28 |
NO990661L (no) | 1999-02-12 |
ATE202610T1 (de) | 2001-07-15 |
EA199900197A1 (ru) | 1999-06-24 |
EP0918910A1 (de) | 1999-06-02 |
DK0918910T3 (da) | 2001-09-17 |
DE19632796A1 (de) | 1998-02-19 |
BG103035A (en) | 1999-07-30 |
CA2263997A1 (en) | 1998-02-19 |
PL331243A1 (en) | 1999-07-05 |
DE59703918D1 (de) | 2001-08-02 |
NO990661D0 (no) | 1999-02-12 |
BG62896B1 (bg) | 2000-10-31 |
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