FR94568E - Complexes of mineral fibers and thermoplastic materials which can be used in particular as sub-layers for coatings intended to provide sound insulation. - Google Patents

Complexes of mineral fibers and thermoplastic materials which can be used in particular as sub-layers for coatings intended to provide sound insulation.

Info

Publication number
FR94568E
FR94568E FR151671A FR151671A FR94568E FR 94568 E FR94568 E FR 94568E FR 151671 A FR151671 A FR 151671A FR 151671 A FR151671 A FR 151671A FR 94568 E FR94568 E FR 94568E
Authority
FR
France
Prior art keywords
complexes
sub
layers
sound insulation
thermoplastic materials
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
Application number
FR151671A
Other languages
French (fr)
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
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 FR117218A external-priority patent/FR1539907A/en
Application filed by Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Priority claimed from FR151670A external-priority patent/FR94567E/en
Priority to FR151671A priority Critical patent/FR94568E/en
Priority to NO290368A priority patent/NO134166C/no
Priority to US3658633D priority patent/US3658633A/en
Priority to GB3655468A priority patent/GB1219023A/en
Priority to CH1169468A priority patent/CH498059A/en
Priority to DE19681784432 priority patent/DE1784432C3/en
Priority to BE719191D priority patent/BE719191A/xx
Priority to ES356998A priority patent/ES356998A1/en
Priority to SE1065568A priority patent/SE343158B/xx
Priority to NL6811269A priority patent/NL158861B/en
Priority to DK383468AA priority patent/DK141244B/en
Priority to JP5586668A priority patent/JPS565663B1/ja
Priority to FI224968A priority patent/FI50847C/en
Publication of FR94568E publication Critical patent/FR94568E/en
Application granted granted Critical
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • 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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • 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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/002—Inorganic yarns or filaments
    • D04H3/004—Glass yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/12—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0004—Compounds chosen for the nature of their cations
    • C04B2103/0006—Alkali metal or inorganic ammonium compounds
    • C04B2103/0009—Inorganic ammonium compounds
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/44—Thickening, gelling or viscosity increasing agents
    • 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
    • C04B2111/52—Sound-insulating materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
    • Y10T428/249942—Fibers are aligned substantially parallel
    • Y10T428/249946—Glass fiber

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Building Environments (AREA)
  • Paper (AREA)
FR151671A 1967-08-08 1968-05-14 Complexes of mineral fibers and thermoplastic materials which can be used in particular as sub-layers for coatings intended to provide sound insulation. Expired FR94568E (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
FR151671A FR94568E (en) 1967-08-08 1968-05-14 Complexes of mineral fibers and thermoplastic materials which can be used in particular as sub-layers for coatings intended to provide sound insulation.
NO290368A NO134166C (en) 1967-08-08 1968-07-23
US3658633D US3658633A (en) 1967-08-08 1968-07-25 Aggregates of mineral fibers and thermoplastic materials useful particularly as underlayers for structural sheathings for acoustic insulation
GB3655468A GB1219023A (en) 1967-08-08 1968-07-31 Sound insulating products made of mineral fibres and thermoplastic materials
CH1169468A CH498059A (en) 1967-08-08 1968-08-05 Fibrous product intended for sound insulation, its manufacturing process and equipment for implementing this process
SE1065568A SE343158B (en) 1967-08-08 1968-08-07
DE19681784432 DE1784432C3 (en) 1967-08-08 1968-08-07 Sound-absorbing, elastic felt made of mineral fibers bound with an elastomer, as well as method and device for its production
BE719191D BE719191A (en) 1967-08-08 1968-08-07
ES356998A ES356998A1 (en) 1967-08-08 1968-08-07 Aggregates of mineral fibers and thermoplastic materials useful particularly as underlayers for structural sheathings for acoustic insulation
NL6811269A NL158861B (en) 1967-08-08 1968-08-08 PROCEDURE FOR MANUFACTURE OF AN ELASTIC MATERIAL, AS WELL AS THE PRODUCTS SO MADE FROM ELASTIC MATERIAL.
DK383468AA DK141244B (en) 1967-08-08 1968-08-08 Process for making elastic products for use in association with flexible or rigid floor or wall coverings.
JP5586668A JPS565663B1 (en) 1967-08-08 1968-08-08
FI224968A FI50847C (en) 1967-08-08 1968-08-08 A method of making a flexible product for combination with soft or rigid wall or floor coverings to improve acoustic insulation.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR117218A FR1539907A (en) 1967-08-08 1967-08-08 Complexes of mineral fibers and thermoplastic materials usable in particular as underlays for coatings intended to provide sound insulation
FR151670A FR94567E (en) 1967-08-08 1968-05-14 Complexes of mineral fibers and thermoplastic materials which can be used in particular as sub-layers for coatings intended to provide sound insulation.
FR151671A FR94568E (en) 1967-08-08 1968-05-14 Complexes of mineral fibers and thermoplastic materials which can be used in particular as sub-layers for coatings intended to provide sound insulation.

Publications (1)

Publication Number Publication Date
FR94568E true FR94568E (en) 1969-09-12

Family

ID=27244401

Family Applications (1)

Application Number Title Priority Date Filing Date
FR151671A Expired FR94568E (en) 1967-08-08 1968-05-14 Complexes of mineral fibers and thermoplastic materials which can be used in particular as sub-layers for coatings intended to provide sound insulation.

Country Status (12)

Country Link
US (1) US3658633A (en)
JP (1) JPS565663B1 (en)
BE (1) BE719191A (en)
CH (1) CH498059A (en)
DK (1) DK141244B (en)
ES (1) ES356998A1 (en)
FI (1) FI50847C (en)
FR (1) FR94568E (en)
GB (1) GB1219023A (en)
NL (1) NL158861B (en)
NO (1) NO134166C (en)
SE (1) SE343158B (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL170870C (en) * 1971-05-03 1983-01-03 Koninklijke Hoogovens En Staal METHOD FOR FIRELY COATING OVEN WALLS AND METALLURGIC SHAFT OVEN MADE THEREFORE.
BE791905A (en) * 1971-11-25 1973-05-24 Saint Gobain ELEMENT OF CONSTRUCTION FOR ACOUSTIC INSULATION
JPS5230022Y2 (en) * 1972-11-06 1977-07-08
US3895143A (en) * 1973-03-16 1975-07-15 Nicolet Ind Inc Metal-fiber-latex-containing sheet materials
JPS5346978B2 (en) * 1974-08-02 1978-12-18
FR2329613A1 (en) * 1975-10-31 1977-05-27 Chem Fab Corp Porous sound absorber consisting of substrate coated with polymer - partly filling orifices, pref. glass fabric coated with polymer contg. fluorine
US4104426A (en) * 1975-11-28 1978-08-01 Mcdonnell Douglas Corporation Production of muffler material
US4357436A (en) * 1980-06-02 1982-11-02 Rm Industrial Products Company, Inc. Composite insulating material and process
JPS57157752A (en) * 1981-03-26 1982-09-29 Nissan Motor Every kind of cover for engine and their manufacture
GB2139950B (en) * 1983-04-28 1987-02-04 Honda Motor Co Ltd Composite sound and heat insulating board
JPH069968U (en) * 1992-01-27 1994-02-08 忠司 酒井 Date indicator for calendar
US5324337A (en) * 1992-12-29 1994-06-28 Knauf Fiber Glass Gmbh Method for producing fiber product
ES2121668B1 (en) * 1995-07-24 1999-06-16 Insonorizantes Termico Acustic IMPROVEMENTS IN THE MANUFACTURE OF THERMAL ACOUSTIC INSULATION PANELS.
US5787677A (en) * 1995-10-18 1998-08-04 Owens Corning Fiberglas Technology, Inc. Garage door insulation system
US5965851A (en) * 1997-01-28 1999-10-12 Owens Corning Fiberglas Technology, Inc. Acoustically insulated apparatus
US20020096278A1 (en) * 2000-05-24 2002-07-25 Armstrong World Industries, Inc. Durable acoustical panel and method of making the same
SE0003349D0 (en) * 2000-09-18 2000-09-18 Flaekt Ab sound absorber
EP1539483A4 (en) * 2002-09-13 2008-07-30 Cta Acoustics Inc Improved sound absorbing material and process for making
FR2846989B1 (en) * 2002-11-07 2005-07-01 Saint Gobain Isover MINERAL FIBER MATERIAL FOR ABSORBING IMPACT NOISE
DE202005007293U1 (en) * 2005-05-07 2006-09-07 Kronospan Technical Co. Ltd., Engomi Panels with three-layer impact sound absorption
US8734613B1 (en) * 2013-07-05 2014-05-27 Usg Interiors, Llc Glass fiber enhanced mineral wool based acoustical tile
ES2687106T3 (en) * 2013-10-25 2018-10-23 Ursa Insulation, S.A. Method for the manufacture of mineral wool insulating products with low formaldehyde emissions
US10464846B2 (en) * 2017-08-17 2019-11-05 Usg Interiors, Llc Method for production of acoustical panels
CN110790564A (en) * 2019-11-20 2020-02-14 林培双 Method for preparing sound-proof brick by using waste asphalt

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1503605A (en) * 1920-04-29 1924-08-05 C F Dahlberg Sound-deadening fiber board
US2285423A (en) * 1937-08-10 1942-06-09 Esser Wilhelm Sound absorbing material
US2666699A (en) * 1947-01-06 1954-01-19 Minnesota Mining & Mfg Precipitating size with chromium and aluminum salts
NL245012A (en) * 1958-11-05
US3121656A (en) * 1961-07-28 1964-02-18 Contours Unltd Moldable composition
US3509012A (en) * 1965-11-22 1970-04-28 Owens Corning Fiberglass Corp Composition and compound for treatment of glass fibers to improve elastomeric bonding
US3513065A (en) * 1967-04-19 1970-05-19 Owens Corning Fiberglass Corp Film faced fibrous body

Also Published As

Publication number Publication date
BE719191A (en) 1969-02-07
CH498059A (en) 1970-10-31
DE1784432B2 (en) 1975-10-02
DK141244B (en) 1980-02-11
DK141244C (en) 1980-08-11
NO134166C (en) 1976-08-25
JPS565663B1 (en) 1981-02-06
FI50847B (en) 1976-04-30
ES356998A1 (en) 1970-04-01
NO134166B (en) 1976-05-18
DE1784432A1 (en) 1972-03-16
SE343158B (en) 1972-02-28
FI50847C (en) 1976-08-10
GB1219023A (en) 1971-01-13
NL6811269A (en) 1969-02-11
US3658633A (en) 1972-04-25
NL158861B (en) 1978-12-15

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