GB2151546A - Armoured panel - Google Patents

Armoured panel Download PDF

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Publication number
GB2151546A
GB2151546A GB08429849A GB8429849A GB2151546A GB 2151546 A GB2151546 A GB 2151546A GB 08429849 A GB08429849 A GB 08429849A GB 8429849 A GB8429849 A GB 8429849A GB 2151546 A GB2151546 A GB 2151546A
Authority
GB
United Kingdom
Prior art keywords
armouring
film
wires
plastics
panel
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
Application number
GB08429849A
Other versions
GB2151546B (en
GB8429849D0 (en
Inventor
Hendrik Glastra
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrial Research BV
Original Assignee
Industrial Research BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from NL8102821A external-priority patent/NL8102821A/en
Priority claimed from NL8103489A external-priority patent/NL181858C/en
Application filed by Industrial Research BV filed Critical Industrial Research BV
Publication of GB8429849D0 publication Critical patent/GB8429849D0/en
Publication of GB2151546A publication Critical patent/GB2151546A/en
Application granted granted Critical
Publication of GB2151546B publication Critical patent/GB2151546B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10366—Reinforcements of the laminated safety glass or glazing against impact or intrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • 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
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates or anti-ballistic clothing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

An armouring film comprises thin plastics wires (20) sandwiched between two plastics films 18 and 22. The panel is used, for example, for the protection of glass window panes (6) by being bonded thereto by a layer of adhesive (2). <IMAGE>

Description

1 GB 2 151 546A
SPECIFICATION
Armoured panel The invention relates to a panel, which is armoured or reinforced by a plastics film, which is fastened to the surface of the panel.
Panels of this type are known per se, for example from French Patent Specification
2,457,956. According to this Patent Specificatian, large-area glass panels, in high-rise buildings, are covered by a thin plastics film, to guard against the crashing-down of portions of the panel in the event of the glass panel being damaged for any reason, or even being destroyed.
Nowadays, the continuous increase in lawlessness and public disturbances is resulting in panels of this type being used to an increas- ing extent on office buildings and governmental installations; panels thus armoured or reinforced being located, for the most part, on the door- frames and window-frames situated on the street side. A transparent polyester film is used as the plastics film.
Although good results have already been achieved by armouring a glass pane with a plastics film, for example with a transparent polyester film, based on polyethylene tere- phthalate, and having a thickness of 0.1 mm, there exists, in practice a need for still better means of protection, because experience has shown that a glass pane armoured with only one film is incapable of withstanding repeated heavy blaws, for example with a heavy stone or a hammer.
The purpose of the invention is to further improve the reinforcement or armouring of the panel, without appreciably influencing its original external appearance and, especially in 105 the cases involving a glass panel, without impairing its transparency.
This is achieved, according to the invention, when a second armouring element, composed of thin plastics wires, is applied to the panel. This armouring element is preferably manufactured from a transparent plastics.
An armouring element of this type can be manufactured extremely inexpensively by modern production techniques, and should thus increase the total cost of the reinforcement by only an unimportant amount, while, on the other hand, effecting a considerable reinforcement of the panel. Even under blows from a heavy object, which shatter the glass and finally destroy the plastics film, the wires remain intact, prevent further damage to the film, and act as a barrier against entry to the room which is protected by the panel.
This secand armouring element is preferably provided between the panel and the plastics film; in addition, the armouring element can even be applied, retrospectively, to a panel which is already furnished with a plastics film.
The invention can be used with advantage in the case of a panel which has yet to be armoured, an armouring film being used, which is provided with a layer of adhesive, previously applied thereon, with plastic wires for the second armouring element intercalated therewith, this complete unit then being attached ta the panel which is to be armoured.
The armouring wires can be composed of Keviar, which is very strong, or of another plastics which is suitable for this purpose, such as polyethylene, polypropylene, polyamide, polyacetate, or polyphenyl oxide.
The second armouring element can be designed in the form of separate wires, or also in the form of a meshwork, or net, made of wires which are attached one to another at the nodes.
The claimed exclusive rights also include an armouring or reinforcing film, composed of plastics and provided with a layer of adhesive, thin plastic armouring- wires being embedded in the layer of adhesive, or even being contained within the film material, as well as for a panel which is provided with a plastics film, and with an armouring element which is manufactured from plastics wires. The wires are preferably located between the panel and the film, or are intercalated with the film material.
It is observed that German Auslegeschrift 1,496,507 describes a windscreen for motor vehicles comprising a relatively thick plastics panel, which is provided, on one side, with a hard layer, and which carries, on the other side, a thin glass panel, an armouring element composed of plastics wires being located between the glass panel and the plastics panel.
Furthermore, from French Patent Specification 2,279,544 is known a darkcolored and, therefore, heat-absorbing glass panel, being provided, on one side, with an armouring mesh which is embedded in a layer of cured plastics.
The invention is explained by reference to the drawings, in which:
Figure 1 shows a section through an armouring film according to the invention; Figure 2 shows, diagrammatically, a panel with the armouring film which is to be attached thereon; Figure 3 shows, on a greatly enlarged scale, the individual parts in the assembled state; Figure 4 shows, diagrammatically, a panel with a separate armouring element, which is to be attached thereon, and a reinforcing film, this armouring element being manufactured from plastics wires; Figure 5 shows the parts illustrated in Figure 4, in the assembled state.. and Figure 6 shows a section through a unit in which the armouring threads are not located in the layer of adhesive but on the other side of the armouring film.
In Figure 1, a transparent armouring film is denoted 1, this film preferably being made of a polyester film based on polyethylene tere- 2 GB 2 151 546A 2 phtahalate, and having a thickness of 0.1 mm. The film is provided, on the rear side, with a layer 2 af adhesive, this layer being masked by a protective film 3, which is remaved before the armouring film is attached; thereafter the armouring film is applied to the panel which is to be reinforced. The adhesive 2 then cures, and after a predetermined time, which depends on the nature of the adhesive, the film is inseparably bonded to the panel which is to be armoured.
According to the invention a second armouring element 4 is located in the layer 2 of adhesive, this armouring element 4 being compased of thin plastics wires. These wires are preferably made from a transparent plastics-either Keviarl'or polyethylene, polypropylene, or a polyacetate. The armouring element 4 can be designed in the form of individual wires, or as a net or meshwork, made of wires of this type; these wires can be manufactured in any known way, for example by extrusion. The presence of this second armouring element is hardly noticeable.
In Fig. 2,a wall of a building is denoted 5; this wall is provided with a glass pane 6, on this pane is applied the film 1, witb the second armouring element 4, in a known way, after having first pulled off the protective film 3 and having thoroughly cleaned the glass pane 6. Afterwards the adhesive 2 cures as customary.
The unit, obtained in this way is shown in section, diagrammatically and on a greatly enlarged scale, in Fig. 3.
The various parts of a second embodiment of the invention are shown in Figure 4; these parts are for the sake of clarity, shown at a distance one from another. In this case, the wall 11 of the building is provided with a glass pane 12. An armouring net, or armour ing meshwork 13, manufactured from plastics with the rectangular meshes 14 (other mesh shapes are also possible) is located in front of the inner surface of the glass pane 12. The 110 net or meshwork can be manufactured from a transparent plastics for example polyethylene, polypropylene, polyamide, polyacetate, or po lyphenyl oxide.
The net or meshwork 13 is located between 115 the panel 12 and the transparent reinforcing film 15, known per se, for example, a poly ester film based on polyethylene terephtha late, with a thickness of 1.0 mm. This film is attached, in a known manner, with the aid of 120 a suitable adhesive. The armouring net or armouring meshwork 13 is first suspended in front of the glass panel, after which the film 15 is glued over the net or meshwork. The film 15 adheres to the glass pane 12 in the open spaces between the meshes 14 of the net or meshwork 13.
Figure 5 shows a section through the unit formed by this means; for the sake of clarity the film 15 is not shown as being in contact 130 with the glass pane 12 in the meshes 14 of the net or meshwark 13.
The separate armouring net or armouring meshwork can be manufactured in a known manner, for example by extrusion, and its presence is hardly noticeable. The mesh-width must be selected according to the strength desired. A high strength is achieved even in the case of comparatively wide meshes, e.g.
10 X 10cm.
The panel according to the invention has a considerably higher resistance to damage and destruction, and is scarcely more expensive than the panel as known per se and is ar- moured with one film only.
Figure 6 shows a glass pane 17 with an armouring film 18, which is located on the glass pane 17 by means of the layer 19 of adhesive. The thin armouring wires 20 are located on that side 21 of the film 18 directed away from the layer of adhesive, and are enclosed between this film and a thin covering layer 22, which is glued on top of the film. The use of this thin covering layer has the advantage that the material of the covering layer can adapt its shape very accurately to the plastics wires, so that, during manufacture, no air is enclosed between the film and the covering layer, and a smooth surface, with a pleasant appearance, is obtained.

Claims (13)

1. Armouring film, composed of plastics, characterized by thin plastics armouring wires (20), which are located between the film (18) and a second, thin, covering film (22), which is banded to the surface of the film (18).
2. Panel, armoured by a plastics film, characterized by a second armouring element (4, 13, 20) attached to the pane[ ond composed of thin plastics wires.
3. Device according to Claim 2, characterized in that the second armouring element (4, 13, 20) is composed of a transparent plastics.
4. Device according to Claims 2 and 3, characterized in that the second armouring element (4, 13) is located between the panel (6, 12) and the plastics film (1, 15).
5. Device according to Claims 2 to 4, characterized in that the wires (20) of the second armouring element are located between the armouring film (18) and a second, thin, covering film (22), which is bonded to the surface of the armouring film (18).
6. Device according to Claim 5, characterized in that the armouring film (18) is provided with a layer (19) of adhesive.
7. Device according to Claims 2 to 4, with an armouring film previously provided with a layer of adhesive, characterized in that the wires of the second armouring element (4 13) are intercalated with or embedded in, the adhesive (2), the thus obtained unit being applied to the panel (6) to be armoured.
8. Device according to Claims 2 to 7, 3 GB2151546A 3 characterized in that the armouring wires are manufactured fram KeviarO.
9. Device according to Claims 2 to 7, characterized in that the armouring wires are 5 manufactured from polyethylene.
10. Device according to Claims 2 to 7, characterized in that the armouring wires are manufactured from polypropylene.
11. Device according to Claims 2 to 7, characterized in that the armouring wires are manufactured from polyacetate.
12. Device according to Claims 2 to 11 characterized in that the second armouring element (4, 13, 20) is made up from a number of individual wires.
13. Device according to Claims 2 to 11, characterized in that the second armouring element (4, 13, 20) is constructed in the form of a net, or meshwork, made of wires at- tached to one another at the nodes.
Printed in the United Kingdom for Her Majestys Stationery Office, Dd 8818935, 1985, 4235. Published at The Patent Office, 25 Southampton Buildings, London, WC2A 'I AY, from which copies may be obtained.
GB08429849A 1981-06-11 1984-11-26 Armoured panel Expired GB2151546B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8102821A NL8102821A (en) 1981-06-11 1981-06-11 METHOD FOR MANUFACTURING A PANEL AND REINFORCED PANEL REINFORCED WITH A PLASTIC FOIL ADHESED TO IT
NL8103489A NL181858C (en) 1981-07-23 1981-07-23 METHOD FOR MANUFACTURING A REINFORCED PLASTIC FOIL AND REINFORCEMENT WIRES AND PLASTIC REINFORCING FOIL

Publications (3)

Publication Number Publication Date
GB8429849D0 GB8429849D0 (en) 1985-01-03
GB2151546A true GB2151546A (en) 1985-07-24
GB2151546B GB2151546B (en) 1986-01-15

Family

ID=26645704

Family Applications (2)

Application Number Title Priority Date Filing Date
GB08303301A Expired GB2120973B (en) 1981-06-11 1982-06-02 Armouring film
GB08429849A Expired GB2151546B (en) 1981-06-11 1984-11-26 Armoured panel

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB08303301A Expired GB2120973B (en) 1981-06-11 1982-06-02 Armouring film

Country Status (6)

Country Link
BR (1) BR8203412A (en)
DE (1) DE3218868C2 (en)
FR (1) FR2515246A1 (en)
GB (2) GB2120973B (en)
IT (1) IT1148590B (en)
SE (1) SE8203603L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248208A (en) * 1990-09-27 1992-04-01 Patrick Mitchell Reinforced translucent panel
US9254709B2 (en) 2014-01-17 2016-02-09 Jah Yih Enterprise Co., Ltd. Adhesive decorative pattern with pliable polymer film and method of making therof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4623574A (en) * 1985-01-14 1986-11-18 Allied Corporation Ballistic-resistant composite article
EP1918502A1 (en) * 2006-10-27 2008-05-07 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO Method for armouring a window
DE102014100687B4 (en) * 2014-01-22 2022-03-03 Jah Yih Enterprise Co., Ltd. Self-adhesive decorative design with flexible polymeric film and method of making the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1006366A (en) * 1961-12-09 1965-09-29 Willi Mueller Improvements in and relating to method and apparatus for manufacturing reinforced multi-layer films
GB1157856A (en) * 1966-05-10 1969-07-09 Jarmuefejlesztesi Intezet Improvements in or relating to the Production of Textile Materials
GB1230015A (en) * 1967-04-21 1971-04-28
EP0089592A2 (en) * 1982-03-24 1983-09-28 Bayer Ag Process for the preparation of methyl ketones

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191525B (en) * 1956-03-16 1965-04-22 Detag Safety glass pane with high light transmission
GB1006399A (en) * 1962-07-18 1965-09-29 Asahi Tokushu Gohan Kabushiki Improvements relating to decorative laminated wood panels
GB1137283A (en) * 1966-03-16 1968-12-18 James Halstead Holdings Ltd Improvements relating to floor covering and a method of making same
DE6606037U (en) * 1968-01-03 1970-07-30 Bemberg Ag COMPOSITE FILM WITH A REINFORCEMENT INLAY CONSISTING OF A GRID-SHAPED AREA
DE2328956C3 (en) * 1973-06-07 1979-01-25 Continental Gummi-Werke Ag, 3000 Hannover Plate made of plastic with an embedded textile reinforcement insert
BE829777A (en) * 1974-07-22 1975-10-01 COLORED OPAQUE PANEL AND ITS MANUFACTURING PROCESS
FR2430847A1 (en) * 1978-07-13 1980-02-08 Saint Gobain HEATING AND / OR ALARM GLASS
FR2457956A1 (en) * 1979-05-31 1980-12-26 Anastasie Maurice Glass covered with polyester film and set in silicone rubber mastic - inhibits fragmentation of window by shock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1006366A (en) * 1961-12-09 1965-09-29 Willi Mueller Improvements in and relating to method and apparatus for manufacturing reinforced multi-layer films
GB1157856A (en) * 1966-05-10 1969-07-09 Jarmuefejlesztesi Intezet Improvements in or relating to the Production of Textile Materials
GB1230015A (en) * 1967-04-21 1971-04-28
EP0089592A2 (en) * 1982-03-24 1983-09-28 Bayer Ag Process for the preparation of methyl ketones

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248208A (en) * 1990-09-27 1992-04-01 Patrick Mitchell Reinforced translucent panel
GB2248208B (en) * 1990-09-27 1995-05-24 Patrick Mitchell Reinforced translucent panel
US9254709B2 (en) 2014-01-17 2016-02-09 Jah Yih Enterprise Co., Ltd. Adhesive decorative pattern with pliable polymer film and method of making therof

Also Published As

Publication number Publication date
IT1148590B (en) 1986-12-03
GB2120973A (en) 1983-12-14
DE3218868C2 (en) 1985-11-28
SE8203603L (en) 1982-12-12
GB2151546B (en) 1986-01-15
GB8303301D0 (en) 1983-03-09
BR8203412A (en) 1983-05-31
DE3218868A1 (en) 1983-01-13
GB8429849D0 (en) 1985-01-03
FR2515246A1 (en) 1983-04-29
GB2120973B (en) 1985-11-27
FR2515246B1 (en) 1985-04-12
IT8248617A0 (en) 1982-06-10

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