NO150730B - WALL OR FLOORING - Google Patents
WALL OR FLOORING Download PDFInfo
- Publication number
- NO150730B NO150730B NO792620A NO792620A NO150730B NO 150730 B NO150730 B NO 150730B NO 792620 A NO792620 A NO 792620A NO 792620 A NO792620 A NO 792620A NO 150730 B NO150730 B NO 150730B
- Authority
- NO
- Norway
- Prior art keywords
- layer
- mortar
- rubber
- cement
- elastic
- Prior art date
Links
- 238000009408 flooring Methods 0.000 title 1
- 239000004570 mortar (masonry) Substances 0.000 claims description 26
- 229920001971 elastomer Polymers 0.000 claims description 20
- 239000006260 foam Substances 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 6
- 229920000126 latex Polymers 0.000 claims description 6
- 239000004816 latex Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 239000005060 rubber Substances 0.000 description 17
- 239000004568 cement Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 4
- 229920006173 natural rubber latex Polymers 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/0215—Flooring or floor layers composed of a number of similar elements specially adapted for being adhesively fixed to an underlayer; Fastening means therefor; Fixing by means of plastics materials hardening after application
- E04F15/02155—Adhesive means specially adapted therefor, e.g. adhesive foils or strips
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/22—Resiliently-mounted floors, e.g. sprung floors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Floor Finish (AREA)
- Laminated Bodies (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Fire-Extinguishing Compositions (AREA)
- Catching Or Destruction (AREA)
Description
Den foreliggende oppfinnelse vedrører et vegg- eller gulvbelegg omfattende et på en støtteflate båret mørtellag som har elastiske egenskaper og er tildannet av et hydraulisk bindemiddel, en elastomer latex og vann, et dekklag (f.eks. stein, fliser osv.) festet til mørtellaget, samt et ytterligere elastisk lag. The present invention relates to a wall or floor covering comprising a mortar layer carried on a support surface which has elastic properties and is made of a hydraulic binder, an elastomer latex and water, a cover layer (e.g. stone, tiles etc.) attached to the mortar layer , as well as a further elastic layer.
Et slikt vegg- eller gulvbelegg til dekning for eksempel av en vegg eller et gulv med et mørtellag er tidligere kjent. Vegger eller gulv som har en tendens til fuktighetsgjennomtrengning på visse punkter, er beheftet med den ulempe at mørtel-laget løsner, og at den synlige flate av mørtellaget vil bli skjemmet etter en lengre eller kortere periode pga. forekommende rifter eller pga. mørtelpartier som skaller av. Such a wall or floor covering for covering, for example, a wall or a floor with a layer of mortar is previously known. Walls or floors that tend to penetrate moisture at certain points have the disadvantage that the mortar layer loosens, and that the visible surface of the mortar layer will be disfigured after a longer or shorter period due to occurring tears or due to parts of mortar that peel off.
Selv når et mørtellag ikke skaller av, kan overflaten Even when a layer of mortar does not peel, the surface may
bli lite tiltalende pga. synlige sprekker. become unattractive due to visible cracks.
For å råde bot på disse ulemper har man gjort forsøk på Attempts have been made to remedy these disadvantages
å dekke bæreflaten med et fuktighetsbestandig middel, men denne løsning har ikke vist seg å være effektiv. to cover the carrier surface with a moisture-resistant agent, but this solution has not been shown to be effective.
Det er også kjent å forsyne en bæreflate i form av sement-eller betonggulv, etter at et mørtellag er påført, med et dekke bestående av keramiske eller naturstenfliser, men heller ikke dette er tilfredsstillende fordi der også her kan forekomme sprekker i mørtellaget pga. fuktighetsgjennomtrengning. It is also known to supply a bearing surface in the form of a cement or concrete floor, after a layer of mortar has been applied, with a covering consisting of ceramic or natural stone tiles, but this is also not satisfactory because here too cracks can occur in the mortar layer due to moisture penetration.
En ytterligere ulempe hos kjente mørtellag er at de lett vil revne når der benyttes en ikke glatt eller lett deformerbar bæreflate og der er påført et dekklag med stor vekt. A further disadvantage of known mortar layers is that they will crack easily when a non-smooth or easily deformable bearing surface is used and a covering layer with a large weight is applied.
Et lignende problem opptrer når naturstenfliser eller keramikkfliser legges på et tregulv fordi slike gulv lett kan sette seg. A similar problem occurs when natural stone tiles or ceramic tiles are laid on a wooden floor because such floors can settle easily.
Når der benyttes et mørtellag med elastiske egenskaper, vil dette lag ikke lenger være istand til lett å revne pga. fuktighetsgjennomtrengning eller en deformasjon av bærerflaten, idet de elastiske egenskaper vil motvirke eventuelle revneten-denser. Sprekker i betonggulv vil ikke lenger kunne ekspandere inn i dekklaget, og der oppnås en lavere belastningsmodul. Videre vil mekaniske og termiske belastninger på et slikt dekklag bli jevnt utjevnet. When a mortar layer with elastic properties is used, this layer will no longer be able to crack easily due to moisture penetration or a deformation of the carrier surface, as the elastic properties will counteract any crack tendencies. Cracks in concrete floors will no longer be able to expand into the cover layer, and a lower load modulus is achieved there. Furthermore, mechanical and thermal loads on such a cover layer will be evenly balanced.
Fra SE utlegningsskrift 390.182 er det kjent å anordne From SE explanatory document 390.182 it is known to arrange
et elastisk lag mellom en støtteflate og et mørtellag, for der-ved å forbedre lydisolasjonen. Videre er det fra dette skrift kjent å anvende såkalte "flytende gulv" for i større utstrekning å hindre forplantning av lyd mellom forskjellige rom i bygningen. an elastic layer between a support surface and a mortar layer, thereby improving sound insulation. Furthermore, it is known from this document to use so-called "floating floors" to prevent the propagation of sound between different rooms in the building to a greater extent.
Ifølge det svenske skrift blir der som elastisk lag benyt-tet en mineralullfibermatte som med sine egenskaper gir et re-dusert lydgjennomgangstall. According to the Swedish literature, a mineral wool fiber mat is used as an elastic layer, which with its properties provides a reduced sound transmission figure.
Til grunn for den foreliggende oppfinnelse ligger den oppgave å gi anvisning på et ytterligere elastisk lag som ikke bare gir god lydisolasjon, men som også danner en fuktsperre og dessuten innebærer at en fjerning av dekklaget fra gulvet eller veggen kan utføres meget lettere, dersom et slikt belegg skulle fornyes. The present invention is based on the task of providing instructions for a further elastic layer which not only provides good sound insulation, but which also forms a moisture barrier and also implies that a removal of the cover layer from the floor or wall can be carried out much more easily, if such coating had to be renewed.
Oppgaven løses ifølge oppfinnelsen ved et belegg av den innledningsvis angitte art, som erkarakterisert vedat det ytterligere elastiske lag som står i direkte forbindelse med mørtellaget, består av et skumplastlag eller av et folielag båret av en metalltråd-netting. According to the invention, the task is solved by a coating of the type indicated at the outset, which is characterized in that the further elastic layer which is in direct contact with the mortar layer consists of a foam plastic layer or a foil layer supported by a metal wire mesh.
Passende kan skumplastlaget festes til bærerflaten ved hjelp av et lag bestående av et hydraulisk bindemiddel som opp-viser elastiske egenskaper. Appropriately, the foam plastic layer can be attached to the carrier surface by means of a layer consisting of a hydraulic binder which exhibits elastic properties.
Mørtellaget kan fortrinnsvis bestå av et elastomert sementlag. Laget omfatter da fortrinnsvis elastomere partikler, f.eks. gummipartikler, gummigranulat eller gummifibre, idet gummipar-tiklene eller gummifibrene (med en lengde på f.eks. 1-2 cm) fastklebes til hinannen ved hjelp av mørtelen. The mortar layer can preferably consist of an elastomeric cement layer. The layer then preferably comprises elastomeric particles, e.g. rubber particles, rubber granules or rubber fibres, the rubber particles or rubber fibers (with a length of e.g. 1-2 cm) being stuck to each other using the mortar.
For påføring av dekklaget på en deformerbar bærerflate, f.eks. et tregulv, kan mørtellaget fortrinnsvis omfatte elastomere partikler, f .eks. gummipartikler eller gummifibre, idet selve mørtellaget da består av et latex-sementlag. På denne måte vil ikke bare en elastisk virkning av latex-sementen bli oppnådd, men der oppnås videre en ytterligere virkning ved til-stedeværelsen av de elastomere partikler, f.eks. gummipartikler. For applying the cover layer to a deformable carrier surface, e.g. a wooden floor, the mortar layer can preferably comprise elastomeric particles, e.g. rubber particles or rubber fibres, as the mortar layer itself then consists of a latex-cement layer. In this way, not only will an elastic effect of the latex cement be achieved, but a further effect is also achieved by the presence of the elastomeric particles, e.g. rubber particles.
Det ytterligere ettergivende lag, f.eks. et skumplastlag eller et folielag båret av en tråd-netting kan så påføres under et slikt mørtellag med elastiske egenskaper. Skumplastlaget vil da virke som et godt lydisolerende lag, mens et ifolielag The further yielding layer, e.g. a foam plastic layer or a foil layer supported by a wire mesh can then be applied under such a mortar layer with elastic properties. The foam plastic layer will then act as a good soundproofing layer, while a foil layer
på netting passer for industribygg. on mesh suitable for industrial buildings.
Et mørtellag med elastiske egenskaper består fortrinnsvis av en blanding av et hydraulisk bindemiddel med sement og elastomer latex, fortrinnsvis en naturlig gummi-latex. A mortar layer with elastic properties preferably consists of a mixture of a hydraulic binder with cement and elastomer latex, preferably a natural rubber latex.
Oppfinnelsen vil nå bli nærmere belyst i forbindelse med en utførelsesform vist på tegningen. Fig. 1 viser et tverrsnitt av et tregulv omfattende et dekklag av naturstenfliser. The invention will now be explained in more detail in connection with an embodiment shown in the drawing. Fig. 1 shows a cross-section of a wooden floor comprising a covering layer of natural stone tiles.
Fig. 2 er et tverrsnitt gjennom en variant av et gulv Fig. 2 is a cross-section through a variant of a floor
med et dekklag av keramikkfliser. with a cover layer of ceramic tiles.
På fig. 1 er der vist et tregulv 5 som bærer skumplast-plater 6 med åpne porer. In fig. 1 shows a wooden floor 5 which carries foam plastic sheets 6 with open pores.
Skumplastplatene 6 er dekket med et mørtellag 7 bestående av en blanding av sand, sement og gummifibre 8 med en lengde på 1,5 cm, blandet med vann og en naturlig gummi-latex. The foam plastic sheets 6 are covered with a mortar layer 7 consisting of a mixture of sand, cement and rubber fibers 8 with a length of 1.5 cm, mixed with water and a natural rubber latex.
Mørtellaget 7 bærer et lag av naturstenfliser 9. Skjøtene 10 mellom flisene er fylt med en mørtel bestående av sand, en sement bundet med vann og en naturlig gummi-latex, hvilken blanding er spesielt egnet for lette industrigulv. The mortar layer 7 carries a layer of natural stone tiles 9. The joints 10 between the tiles are filled with a mortar consisting of sand, a cement bound with water and a natural rubber latex, which mixture is particularly suitable for light industrial floors.
Gulvene på fig. 1 og 2 kan lett fjernes pga. henholdsvis skumplastlaget 6 og folielaget 12. Folielaget 12, slik dette fremgår av fig. 2, bæres av en tråd-netting 11. The floors in fig. 1 and 2 can be easily removed due to respectively the foam plastic layer 6 and the foil layer 12. The foil layer 12, as shown in fig. 2, is carried by a wire mesh 11.
Dersom der bare benyttes latex-sement, kan blandingen omfatte f.eks. 5-50 % gummi, fortrinnsvis 5-40 % gummi, beregnet på sementinnholdet i blandingen. Når der benyttes 5-15 % gummi i blandingen, fås der et sementmørtellag, mens 25-30 % gummi i blandingen kan bevirke at der oppnås et lag med mer markerte gummi-egenskaper. If only latex cement is used, the mixture can include e.g. 5-50% rubber, preferably 5-40% rubber, based on the cement content of the mixture. When 5-15% rubber is used in the mixture, a cement mortar layer is obtained, while 25-30% rubber in the mixture can result in a layer with more marked rubber properties being obtained.
Det skal forstås at de elastiske egenskaper av det eller de nevnte lag kan påvirkes ved hjelp av gummipartikler 8, i hvilket tilfelle innholdet av latex og sand og sement må endres tilsvarende. It should be understood that the elastic properties of the said layer or layers can be influenced by means of rubber particles 8, in which case the content of latex and sand and cement must be changed accordingly.
Mørtellaget kan bestå av to volumdeler naturlig gummi-latex, to volumdeler vann og atten vektdeler av en blanding av sand, sement og gummifibre med en lengde på 1,5 cm, f.eks. The mortar layer can consist of two parts by volume of natural rubber latex, two parts by volume of water and eighteen parts by weight of a mixture of sand, cement and rubber fibers with a length of 1.5 cm, e.g.
10 % gummifibre, regnet i forhold til en tørr blanding. 10% rubber fibres, calculated in relation to a dry mixture.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782835924 DE2835924A1 (en) | 1978-08-16 | 1978-08-16 | WALL PANELING OR FLOOR PANELING |
Publications (3)
Publication Number | Publication Date |
---|---|
NO792620L NO792620L (en) | 1980-02-19 |
NO150730B true NO150730B (en) | 1984-08-27 |
NO150730C NO150730C (en) | 1984-12-05 |
Family
ID=6047201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO792620A NO150730C (en) | 1978-08-16 | 1979-08-13 | WALL OR FLOORING |
Country Status (9)
Country | Link |
---|---|
AT (1) | AT370824B (en) |
BE (1) | BE878174A (en) |
CH (1) | CH650448A5 (en) |
DE (1) | DE2835924A1 (en) |
DK (1) | DK341879A (en) |
FR (1) | FR2433622A1 (en) |
GB (1) | GB2029393B (en) |
NO (1) | NO150730C (en) |
SE (1) | SE442629B (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3046609A1 (en) * | 1980-12-11 | 1982-07-22 | Theodor A. 2803 Weyhe Becker | Combined grouted facing brick type assembly unit - has facers and joint substance applied to usable side of weatherproof support |
JPS61266701A (en) * | 1985-05-17 | 1986-11-26 | 株式会社 東商西脇 | Water-proof construction method of reticulated reinforced laminate |
GB2217631A (en) * | 1988-03-31 | 1989-11-01 | Westinghouse Electric Corp | Method for attenuating gas diffusion through a structure |
NL193952C (en) * | 1993-05-03 | 2001-03-02 | Pelt & Hooykaas Elcemo Bv | Carpeting. |
US7763345B2 (en) | 1999-12-14 | 2010-07-27 | Mannington Mills, Inc. | Thermoplastic planks and methods for making the same |
IT1320156B1 (en) * | 2000-01-27 | 2003-11-18 | Combistone Italia S P A | FLOOR COVERING MATERIAL EQUIPPED WITH SUPPORT AND PROCEDURE FOR ITS PRODUCTION. |
ES2172401B1 (en) * | 2000-05-26 | 2003-12-16 | Quimica Plus S L | PROCEDURE FOR OBTAINING A CHEMICAL POWDER COMPOSITE, APPLICABLE AS A MORTAR WITH THE ADDITION OF WATER. |
IT1314562B1 (en) * | 2000-12-14 | 2002-12-18 | Impresa Marinoni S R L | CLASS A60 FIREPROOF FLOORING PAVING FOR DAMPING LEVIBRATIONS AND APPLICATION PROCEDURE. |
US8028486B2 (en) | 2001-07-27 | 2011-10-04 | Valinge Innovation Ab | Floor panel with sealing means |
FR2866375B1 (en) * | 2004-02-18 | 2007-09-14 | Soprema | METHOD OF SEALING AND FIXING TILES OR THE LIKE AND SEALED GLUE FOR ITS IMPLEMENTATION |
ES2245600B1 (en) * | 2004-06-17 | 2007-04-01 | Crisanto Palacios Gavilan | METHOD OF OBTAINING A MASS OF REINFORCEMENT FOR MARBLE PLATES AND PLATES AS GOT. |
NL1029047C2 (en) | 2005-05-13 | 2006-11-14 | Pelt & Hooykaas Elcemo Bv | Carpeting. |
SE530653C2 (en) | 2006-01-12 | 2008-07-29 | Vaelinge Innovation Ab | Moisture-proof floor board and floor with an elastic surface layer including a decorative groove |
FR2903708B1 (en) * | 2006-07-13 | 2008-09-26 | Eiffage Travaux Publics Soc Pa | MATERIAL FOR IMPROVING SOIL COATING, ESPECIALLY FOR EQUESTRIAN FLOOR, AND METHOD FOR MANUFACTURING SUCH MATERIAL. |
NL2003019C2 (en) | 2009-06-12 | 2010-12-15 | 4Sight Innovation Bv | FLOOR PANEL AND FLOOR COVERAGE CONSISING OF MULTIPLE OF SUCH FLOOR PANELS. |
NL2018781B1 (en) | 2017-04-26 | 2018-11-05 | Innovations4Flooring Holding N V | Panel and covering |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE624798A (en) * | ||||
US1911631A (en) * | 1933-05-30 | Poration | ||
CH248726A (en) * | 1946-02-06 | 1947-05-31 | Fux Wilhelm | Artificial stone slab. |
DE850227C (en) * | 1949-06-11 | 1952-09-22 | Hans Bode | Process for the production of cladding, structural elements and flooring |
DE868572C (en) * | 1950-12-07 | 1953-02-26 | Gustaf Bristol Dipl-In Heijmer | Plaster and filler for building purposes |
DE954582C (en) * | 1951-08-03 | 1956-12-20 | Gewerk Keramchemie | Process for the production of wall or floor covering panels |
FR1259487A (en) * | 1960-03-16 | 1961-04-28 | Sub-floors | |
DE1287991B (en) * | 1965-02-15 | 1969-01-23 | Master Mechanics Company, Cleveland, Ohio (V.St.A.) | Cementitious mixture |
GB1280471A (en) * | 1968-05-14 | 1972-07-05 | Grace W R & Co | Method for preparing preformed structures |
DE1904066A1 (en) * | 1969-01-28 | 1970-11-26 | Kerapid Fertigung | Process for the production of waterproof floor coverings with increased chemical and physical resistance from tiles or slabs |
AT281496B (en) * | 1969-02-21 | 1970-05-25 | Sepp Steiner | Walking covering for floors, in particular for stable floors |
JPS576391B1 (en) * | 1971-06-25 | 1982-02-04 | ||
GB1498297A (en) * | 1976-02-09 | 1978-01-18 | Building Adhesives Ltd | Composition for use in the installation of ceramic tiles |
DE2823399A1 (en) * | 1978-05-29 | 1979-12-06 | Georg Lohse | Floor or wall covering concrete panel - has ceramic coating and is of standard easily handled size |
-
1978
- 1978-08-16 DE DE19782835924 patent/DE2835924A1/en not_active Withdrawn
-
1979
- 1979-08-06 SE SE7906616A patent/SE442629B/en not_active IP Right Cessation
- 1979-08-09 BE BE0/196676A patent/BE878174A/en not_active IP Right Cessation
- 1979-08-13 NO NO792620A patent/NO150730C/en unknown
- 1979-08-14 FR FR7920726A patent/FR2433622A1/en active Granted
- 1979-08-14 AT AT0552479A patent/AT370824B/en not_active IP Right Cessation
- 1979-08-15 DK DK341879A patent/DK341879A/en not_active Application Discontinuation
- 1979-08-15 CH CH7460/79A patent/CH650448A5/en not_active IP Right Cessation
- 1979-08-16 GB GB7928637A patent/GB2029393B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH650448A5 (en) | 1985-07-31 |
FR2433622B1 (en) | 1983-07-18 |
AT370824B (en) | 1983-05-10 |
GB2029393B (en) | 1983-03-23 |
ATA552479A (en) | 1982-09-15 |
GB2029393A (en) | 1980-03-19 |
SE442629B (en) | 1986-01-20 |
BE878174A (en) | 1980-02-11 |
NO792620L (en) | 1980-02-19 |
DE2835924A1 (en) | 1980-02-28 |
FR2433622A1 (en) | 1980-03-14 |
DK341879A (en) | 1980-02-17 |
SE7906616L (en) | 1980-02-17 |
NO150730C (en) | 1984-12-05 |
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