EP0448520B1 - Process for making casings by means of metal structural shapes - Google Patents
Process for making casings by means of metal structural shapes Download PDFInfo
- Publication number
- EP0448520B1 EP0448520B1 EP91830076A EP91830076A EP0448520B1 EP 0448520 B1 EP0448520 B1 EP 0448520B1 EP 91830076 A EP91830076 A EP 91830076A EP 91830076 A EP91830076 A EP 91830076A EP 0448520 B1 EP0448520 B1 EP 0448520B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- structural shapes
- corner
- casing
- angle element
- cut
- 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.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
- E06B3/9624—Corner joints or edge joints for windows, doors, or the like frames or wings with means specially adapted for aligning the frontal surfaces of adjacent frame member ends
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
- E06B3/964—Corner joints or edge joints for windows, doors, or the like frames or wings using separate connection pieces, e.g. T-connection pieces
- E06B3/9641—Corner joints or edge joints for windows, doors, or the like frames or wings using separate connection pieces, e.g. T-connection pieces part of which remains visible
Definitions
- the invention relates to the production of metal casings or frames for windows and the like by means of structural shapes, for example extruded shapes, which are usually made in aluminum or aluminum alloys and usually surface-treated.
- structural shapes for example extruded shapes, which are usually made in aluminum or aluminum alloys and usually surface-treated.
- the ends of the structural shapes converging into a corner are cut to form a miter, that is to say an angle of 45°, and either joined by various kinds of devices of known type, or welded together.
- Square brackets may also be provided which are designed so as to be received within channels formed by structural shapes in order to exactly center the converging, mitered structural shapes.
- Soft sealing strips are also usually provided which are received within channels suitably provided for in the structural shapes to cooperate with fixed structural shapes of the frame of the sash.
- An object of this invention is to provide a casing which overcomes these drawbacks.
- a further object of the invention is a process for making a casing by means of surface treated structural shapes, especially of aluminum alloys or equivalent type, which overcomes the problems of the known processes.
- the process may advantageously include the use of square brackets for the mutual centering of said structural shapes, said brackets being received within channels formed by said structural shapes.
- the positioning of said angle elements may be obtained by making them solid to said square brackets.
- the cutting of the projecting flanges is performed mostly at right angle to the structural shapes, in order to remove the external corner of the mitered end (at 45°).
- a flexible sealing strip may be provided along the outer perimeter of the angle element; said strip is advantageously prolonged beyond said element for its insertion within the strip-receiving channel of the structural shapes converging into the corner.
- the angle element may be so shaped and/or formed with suitable material, so as to result elastically yielding.
- a further object of the invention is a casing formed with structural shapes, wherein the structural shapes converging into a corner, or into each of a plurality of corners, are chamfered at their outer ends, and said casing comprising an angle element disposed within the space formed by the chamfers and which completes the rounded profile of the corner.
- the casing may comprise section-centering square brackets which are received within the channels of the said structural shapes; in this case, the said angle element is advantageously made solid to said centering square bracket and the latter is able to position said angle element when it is engaged into the channels of the converging structural shapes.
- the square bracket with the angle element may be made of metal and provided with a sealing strip.
- the end cuts of the structural shapes may be orthogonal to the said structural shapes.
- Still another object of the invention is an angle element having convex profile, suitable to be used in the above mentioned process, for forming a rounded off corner in a casing made up of metal structural shapes.
- Such angle element may be solid to a square bracket which is used for the centering of mitered structural shapes converging into a corner, the external flanges of said structural shapes being cut off.
- two metal structural shapes 1 of a type known per se which in particular are provided with an outer flange 1A intended to form the protruding external profile of the casing.
- the structural shade forms a channel 1B in the flange 1A for receiving a relatively soft sealing strip 3.
- a second channel 1C is formed sideways and internally to the channel 1B in correspondence of the flange 1A, for the purposes to be indicated hereinafter.
- the two channels 1B and 1C are provided with undercuts allowing the use of elements to be received therein.
- the structural shapes 1 are usually mitered, that is to say cut at an angle of 45° as indicated by 1E in the drawing.
- the mitered cut forms very sharp angles of 45°, in the end part of the outwardly projecting flange 1A which, in turn, determine the formation of very sharp and dangerous edged at the corners of the formed casing.
- the elimination of said dangerous edges is the object of the present invention.
- each of the two structural shapes 1 converging at a corner to be chamfered, and which are mitered in 1E, is transversely cut at 1F, to remove the angular end of the flange 1A; the cuts 1F extend mostly in the region of the two channels 1B and 1C of each structural shape 1.
- the removal of the angular ends of the flanges 1A by means of the cut 1F determines, when the two structural shapes 1 are joined together, the formation of a space in correspondence of the angle formed by the miter. In this space there is inserted an angle element 7 which has an outer rounded off profile 7A and a thickness corresponding to that of the flange 1A, whose end has been removed.
- the angle element 7 is solid to the angled part of the square bracket 5 from which the two flanges 5A are made to project beyond the angle element 7.
- the angle element 7 may be made of the same material as the square bracket 5, that is to say a synthetic, relatively rigid moulded material, or it may be applied to the square bracket 5, 5A, or it may be formed with known techniques to achieve a difference between the physical characteristics of the angle element 7 and those of the square bracket 5, in order to have the element 7 at least slightly softer than the rigid material which forms the square bracket 5.
- the two components 5 and 7 may also be assembled after their respective formation.
- the two structural shapes 1 are joined by clamps of a commercially known type and connected one to the other by screw means or by calking or other, or are directly welded.
- a properly defined position of the two structural shapes is achieved through the square bracket 5, 5A which is inserted into the two converging channels 1C of the two converging structural shapes 1.
- the same square bracket 5, 5A, which is provided with the angle element 7, places the latter in correspondence of the space defined by the cuts 1F, so that said angle element 7 takes up the space defined by the two cuts 1F and forms the corner of the casing with the convex profile 7A.
- the latter is not provided with the sharp corner, which is typical of the known casings and which is responsible for the injury suffered from those who inadvertantly hit such corner.
- the rounding-off 7A of the angle element 7 there is obtained a finishing of the casing which overcomes these drawbacks of the known casings.
- the angle element 7 provides also a particularly good-looking appearance for the said casing.
- the angle element 7 defines a channel-shaped seat along the convex profile 7A, between the rounded-off edge of the profile 7A and the projection formed by the square bracket 5, 5A.
- a sealing strip 9 may be received.
- Said strip 9 projects with its two ends 9A from the seat and can be housed in the adjacent channels of the two structural shapes 1, the sealing strip 3 being shorter, that is to say placed behind the edge formed by the transversal cut 1F, as indicated in 3A.
- the end 9B of the sealing strip 9 carried by the angle element 7 is received within the channel 1B and forms an extension of the sealing strip 3.
- a sealing strip is made to develop throughout the perimeter of the corner region of the casing.
- the sealing strip 9, 9A may be formed together with the piece 7 or sealed thereto to provide the desired physical characteristics.
- the sealing strip 9,9A,9A is omitted and, in the inner part of the angle element 7 a cavity 7B is formed wherein a spongy shim may be glued; this shim is able to substantially complete the sealing in the length between the two sealing strips 3 of the casing.
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forging (AREA)
- Casings For Electric Apparatus (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Adornments (AREA)
- Eyeglasses (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Golf Clubs (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Connection Of Plates (AREA)
- Joining Of Corner Units Of Frames Or Wings (AREA)
Abstract
Description
- The invention relates to the production of metal casings or frames for windows and the like by means of structural shapes, for example extruded shapes, which are usually made in aluminum or aluminum alloys and usually surface-treated. When these structural shapes are machined for the formation of a casing, the ends of the structural shapes converging into a corner are cut to form a miter, that is to say an angle of 45°, and either joined by various kinds of devices of known type, or welded together. Square brackets may also be provided which are designed so as to be received within channels formed by structural shapes in order to exactly center the converging, mitered structural shapes. Soft sealing strips are also usually provided which are received within channels suitably provided for in the structural shapes to cooperate with fixed structural shapes of the frame of the sash. The drawback of these casings is that they have very sharp corners formed by the projecting flanges of the structural shapes and which cannot be rounded because the sides of the casing are made up of shaped sections and, moreover, because the surfaces of these sections are usually subjected to oxidation or other surface treatment in order to achieve certain aesthetical effects. Accordingly, rounding of the corners cannot be performed and they remain, in any case, very stiff insofar as they are made of metal.
- DE-U-89 05 422.9 and US-A-3.728.833 disclose casings frames which comprise structural shapes cutted at 90° and angular elements, the latter completing the corners of the frame and remaining visible between the two shapes which converge into the relevant corner. This leads to a not continuous surface of the frame, which is un-desirable from an unaesthetical point of view. Furthermore, some difficulties can possibly arise in connecting the structural shapes and the angular element.
- An object of this invention is to provide a casing which overcomes these drawbacks. Other objects and advantages will be evident from a reading of the following description.
- A further object of the invention is a process for making a casing by means of surface treated structural shapes, especially of aluminum alloys or equivalent type, which overcomes the problems of the known processes.
- These and other objects are obtained with a process according to
claim 1 and with a casing according to claim 6. Further advantageous embodiments of the process and casing according to the invention are set forth in the dependent claims. - The process may advantageously include the use of square brackets for the mutual centering of said structural shapes, said brackets being received within channels formed by said structural shapes. In this case, the positioning of said angle elements may be obtained by making them solid to said square brackets.
- The cutting of the projecting flanges is performed mostly at right angle to the structural shapes, in order to remove the external corner of the mitered end (at 45°).
- A flexible sealing strip may be provided along the outer perimeter of the angle element; said strip is advantageously prolonged beyond said element for its insertion within the strip-receiving channel of the structural shapes converging into the corner.
- The angle element may be so shaped and/or formed with suitable material, so as to result elastically yielding.
- A further object of the invention is a casing formed with structural shapes, wherein the structural shapes converging into a corner, or into each of a plurality of corners, are chamfered at their outer ends, and said casing comprising an angle element disposed within the space formed by the chamfers and which completes the rounded profile of the corner.
- The casing may comprise section-centering square brackets which are received within the channels of the said structural shapes; in this case, the said angle element is advantageously made solid to said centering square bracket and the latter is able to position said angle element when it is engaged into the channels of the converging structural shapes. The square bracket with the angle element may be made of metal and provided with a sealing strip.
- The end cuts of the structural shapes may be orthogonal to the said structural shapes.
- Still another object of the invention is an angle element having convex profile, suitable to be used in the above mentioned process, for forming a rounded off corner in a casing made up of metal structural shapes. Such angle element may be solid to a square bracket which is used for the centering of mitered structural shapes converging into a corner, the external flanges of said structural shapes being cut off.
- The invention will be better understood by a reading of the following description and attached drawing; which shows a practical, not limiting exemplification of the same invention. In the drawing:
- Fig. 1 shows the components forming a rounded off corner (the connection means being excluded), in an exploded view;
- Figs. 2, 3, 4 and 5 show the angle element in views and partial sections according to lines II-II, III-III and IV-IV, and the structural shape in a view on line V-V in Fig. 1;
- Figs. 6 and 7 show an assembled angle in two opposite views;
- Fig. 8 shows a perspective view of the angle element; and
- Fig. 9 shows an alternative embodiment of the angle element.
- According to what is shown in the attached drawing, for the formation of an angle of a casing made up of structural shapes there are used two metal
structural shapes 1 of a type known per se, which in particular are provided with anouter flange 1A intended to form the protruding external profile of the casing. In particular, the structural shade forms achannel 1B in theflange 1A for receiving a relativelysoft sealing strip 3. Asecond channel 1C is formed sideways and internally to thechannel 1B in correspondence of theflange 1A, for the purposes to be indicated hereinafter. The twochannels channel 1B is thesealing strip 3, while inside thechannel 1C acorresponding projection 5A of asquare bracket 5 may be engaged, theother projection 5A of which is engaged in thechannel 1C of the otherstructural shape 1 which cooperates to the formation of a corner. For the formation of the corners, thestructural shapes 1 are usually mitered, that is to say cut at an angle of 45° as indicated by 1E in the drawing. The mitered cut forms very sharp angles of 45°, in the end part of the outwardly projectingflange 1A which, in turn, determine the formation of very sharp and dangerous edged at the corners of the formed casing. The elimination of said dangerous edges is the object of the present invention. - As it can be seen in the drawing, according to the invention, the end of each of the two
structural shapes 1 converging at a corner to be chamfered, and which are mitered in 1E, is transversely cut at 1F, to remove the angular end of theflange 1A; thecuts 1F extend mostly in the region of the twochannels structural shape 1. The removal of the angular ends of theflanges 1A by means of thecut 1F determines, when the twostructural shapes 1 are joined together, the formation of a space in correspondence of the angle formed by the miter. In this space there is inserted anangle element 7 which has an outer rounded offprofile 7A and a thickness corresponding to that of theflange 1A, whose end has been removed. According to what is shown in the drawing, theangle element 7 is solid to the angled part of thesquare bracket 5 from which the twoflanges 5A are made to project beyond theangle element 7. Theangle element 7 may be made of the same material as thesquare bracket 5, that is to say a synthetic, relatively rigid moulded material, or it may be applied to thesquare bracket angle element 7 and those of thesquare bracket 5, in order to have theelement 7 at least slightly softer than the rigid material which forms thesquare bracket 5. The twocomponents - When assembling the casing, the two
structural shapes 1 are joined by clamps of a commercially known type and connected one to the other by screw means or by calking or other, or are directly welded. A properly defined position of the two structural shapes is achieved through thesquare bracket converging channels 1C of the two convergingstructural shapes 1. The samesquare bracket angle element 7, places the latter in correspondence of the space defined by thecuts 1F, so that saidangle element 7 takes up the space defined by the twocuts 1F and forms the corner of the casing with theconvex profile 7A. The latter is not provided with the sharp corner, which is typical of the known casings and which is responsible for the injury suffered from those who inadvertantly hit such corner. On the contrary, with the rounding-off 7A of theangle element 7 there is obtained a finishing of the casing which overcomes these drawbacks of the known casings. Theangle element 7 provides also a particularly good-looking appearance for the said casing. - Advantageously, the
angle element 7 defines a channel-shaped seat along theconvex profile 7A, between the rounded-off edge of theprofile 7A and the projection formed by thesquare bracket sealing strip 9 may be received. Saidstrip 9 projects with its twoends 9A from the seat and can be housed in the adjacent channels of the twostructural shapes 1, thesealing strip 3 being shorter, that is to say placed behind the edge formed by thetransversal cut 1F, as indicated in 3A. In this way, the end 9B of thesealing strip 9 carried by theangle element 7 is received within thechannel 1B and forms an extension of thesealing strip 3. Accordingly, a sealing strip is made to develop throughout the perimeter of the corner region of the casing. Alternatively, thesealing strip piece 7 or sealed thereto to provide the desired physical characteristics. - According to the equivalent solution of Fig. 9, the
sealing strip cavity 7B is formed wherein a spongy shim may be glued; this shim is able to substantially complete the sealing in the length between the twosealing strips 3 of the casing. - By operating a simple cut along the
lines 1F, transversely to thestructural shape 1 and in correspondence of themitered corners 1E, there is obtained the seat for theangle element 7 which is easily mounted with the same operation necessary for assembling thesquare brackets
Claims (9)
- Process for making a casing formed by structural shapes (1), which have projecting flanges (1A) extending from the structural shapes (1) outside of the casing for carrying of sealing strips (3), wherein- two structural shapes (1) converging into a corner are cut at 45° (in 1E) to form abutting surfaces of mutual contact;- the two structural shapes (1) are mutually connected together by coupling means to form the corner of the casing;
characterized in that:- the mitred ends of the structural shapes (1) converging into a corner are transversely cut (at 1F) to remove the angular ends of the projecting flanges (1A);- and that when the two mitred structural shapes are mutually connected, a rounded-off angle element (7) is placed in the space left by said cut-away angular ends, thereby completing the casing by forming a rounded-off corner profile (7A). - Process according to claim 1, characterized by the use of square brackets (5, 5A) for the mutual centering of said converging structural shapes (1), said square brackets being housed within channels (1C) formed by said projecting flanges (1A) of said structural shapes (1), and wherein said angle elements (7) are solid to said square brackets (5, 5A) and are thus positioned by the latter.
- Process according to claim 1 or 2, characterized in that the cut (1F) of the projecting flanges (1A) is performed perpendicularly to the structural shapes (1) to remove the outer angle of the mitered (cut at 45°) end.
- Process according to any preceding claim, characterized by the use of structural shapes (1) provided with channels (1B) for housing sealing strups (3), and wherein a flexible sealing strip (9, 9A) is provided along the outer perimeter (7A) of the angle element (7) and is extended and inserted into the said channels (1B).
- Process according to claim 1 or 2, characterized in that the angle element (7) is shaped and/or formed with such a material as to be elastically yielding.
- A casing formed by structural shapes (1) which have flanges (1A) projecting on the outside of the mounted casing, wherein said structural shapes (1) are cut at 45° at their respective ends converging into a corner, and wherein means are provided along the edges (1E) cut at 45° for mechanically connecting said shaped profiles,
characterized in that said projecting flanges (1A) on the end of the structural shapes converging into a corner are cut out (1F), and that an angle element (7) is housed in the space formed by the cuts (1F), said angle element (7) completing the corner with a rounded-off profile. - Casing according to claim 6, characterized in that it comprises a square bracket (5, 5A) for the centering of the structural shapes (1), which is housed within channels (1C) of the said projecting flanges (1A) of the structural shapes (1), and that said angle element (7) is solid to said centering square bracket (5, 5A) which allows the positioning of the angle element (7) when the square bracket (5, 5A) becomes engaged into said channels (1C).
- Casing according to claim 6 or 7, characterized in that the cut off edges (1F) of said projecting flanges (1A) of the structural shapes (1) are orthogonal to the longitudinal development of said structural shapes (1).
- An angle element (7) for the formation of a casing according to the process of one or more of claims 1 to 5, including a convex rounded-off external corner (7A), wherein said angle element is solid with the angled part of the square bracket (5, 5A) provided for the mutual centering of two structural shapes converging into a corner, and an edge being provided, projecting from the surface of the angle element along the rounded-off external corner (7A) thereof,
characterized in that the square bracket (5, 5A) projects from the surface of the angle element, on which said edge projects, and that a sealing strip (9) or a shim is housed into a seat formed by said edge and said square bracket.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT9330A IT1238886B (en) | 1990-03-06 | 1990-03-06 | PROCEDURE FOR MAKING FRAMES WITH METAL PROFILES AND ROUNDED CORNERS. |
IT933090 | 1990-03-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0448520A1 EP0448520A1 (en) | 1991-09-25 |
EP0448520B1 true EP0448520B1 (en) | 1995-02-15 |
Family
ID=11128538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91830076A Expired - Lifetime EP0448520B1 (en) | 1990-03-06 | 1991-03-06 | Process for making casings by means of metal structural shapes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0448520B1 (en) |
AT (1) | ATE118590T1 (en) |
DE (1) | DE69107319T2 (en) |
ES (1) | ES2069264T3 (en) |
IT (1) | IT1238886B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19715247C1 (en) * | 1997-04-12 | 1998-07-02 | Ohmen Gmbh | Composite frame, particularly for door |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT222061Z2 (en) * | 1991-12-03 | 1994-12-29 | Hydro Aluminium Systems Spa | COMPLEX OF METAL PROFILES FOR WINDOW FRAMES EQUIPPED WITH REINFORCEMENT TEAMS |
DE19607557A1 (en) * | 1996-02-29 | 1997-09-04 | Hans Dieter Niemann | Retrofit frame for doors |
DE20018204U1 (en) * | 2000-10-24 | 2001-03-01 | Kömmerling Kunststoff GmbH, 66954 Pirmasens | Connecting element for meeting hollow profile sections |
ITMI20060071A1 (en) * | 2006-01-18 | 2007-07-19 | Norsk Hydro As | ELEMENT TO FORM A ROUNDED CORNER IN AN ALUMINUM WINDOW |
IT1400200B1 (en) * | 2010-05-25 | 2013-05-24 | Sealt S R L | CORNER PORTION OF WINDOW FRAME AND WINDOW FRAME WITH ITS CORNER PORTION. |
CN107060595A (en) * | 2017-05-04 | 2017-08-18 | 四川良木道门窗型材有限公司 | A kind of seamless whole weldering window |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3728833A (en) * | 1971-03-11 | 1973-04-24 | A Grossman | Frame construction having arcuate corners and a continuous feature strip |
IT1081320B (en) * | 1977-03-15 | 1985-05-21 | Ip Ind Chimica Per L Arredamen | MODULAR FRAMEWORK STRUCTURE CONSISTING OF PROFILES AND TEAM CONNECTION ELEMENTS |
GB2140853B (en) * | 1983-05-25 | 1986-04-23 | Vernon Norman | Window frame corner piece |
GB8625317D0 (en) * | 1986-10-22 | 1986-11-26 | Britel A | Door hinge safety arrangement |
DE8905422U1 (en) * | 1989-04-28 | 1989-07-13 | Rott, Bernd, 6551 Bretzenheim | Kit for forming doors for furniture |
-
1990
- 1990-03-06 IT IT9330A patent/IT1238886B/en active IP Right Grant
-
1991
- 1991-03-06 DE DE69107319T patent/DE69107319T2/en not_active Expired - Fee Related
- 1991-03-06 EP EP91830076A patent/EP0448520B1/en not_active Expired - Lifetime
- 1991-03-06 ES ES91830076T patent/ES2069264T3/en not_active Expired - Lifetime
- 1991-03-06 AT AT91830076T patent/ATE118590T1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19715247C1 (en) * | 1997-04-12 | 1998-07-02 | Ohmen Gmbh | Composite frame, particularly for door |
Also Published As
Publication number | Publication date |
---|---|
EP0448520A1 (en) | 1991-09-25 |
ES2069264T3 (en) | 1995-05-01 |
IT9009330A1 (en) | 1991-09-06 |
IT1238886B (en) | 1993-09-04 |
ATE118590T1 (en) | 1995-03-15 |
DE69107319D1 (en) | 1995-03-23 |
IT9009330A0 (en) | 1990-03-06 |
DE69107319T2 (en) | 1995-08-10 |
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