FR91244E - Process and devices for obtaining cellular products in thermoplastic resin - Google Patents
Process and devices for obtaining cellular products in thermoplastic resinInfo
- Publication number
- FR91244E FR91244E FR83268A FR83268A FR91244E FR 91244 E FR91244 E FR 91244E FR 83268 A FR83268 A FR 83268A FR 83268 A FR83268 A FR 83268A FR 91244 E FR91244 E FR 91244E
- Authority
- FR
- France
- Prior art keywords
- devices
- thermoplastic resin
- cellular products
- obtaining cellular
- obtaining
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/16—Making expandable particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/206—Using expandable particles or beads as starting material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/24—Making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/26—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length using several expanding steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/30—Expanding the moulding material between endless belts or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
- B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
- B29C44/5636—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching with the addition of heat
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Building Environments (AREA)
Priority Applications (45)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE755339D BE755339R (en) | 1965-04-15 | METHOD AND DEVICES FOR OBTAINING CELLULAR RESIN PRODUCTS | |
FR13377A FR1440106A (en) | 1965-04-15 | 1965-04-15 | Process and devices for obtaining cellular products in thermoplastic resin |
AT1083165A AT301854B (en) | 1965-04-15 | 1965-12-01 | Method and device for the production of foam cores |
FI311765A FI46702C (en) | 1965-04-15 | 1965-12-29 | Method and apparatus for making cellular products from a thermoplastic resin |
NL6604171A NL6604171A (en) | 1965-04-15 | 1966-03-30 | |
GB1456566A GB1093238A (en) | 1965-04-15 | 1966-04-01 | Process for producing a cellular product from expanded pearls of synthetic resin |
DE1966C0038706 DE1629321B2 (en) | 1965-04-15 | 1966-04-05 | Method and apparatus for the continuous production of foamed webs |
BE679070A BE679070A (en) | 1965-04-15 | 1966-04-05 | |
LU50900A LU50900A1 (en) | 1965-04-15 | 1966-04-14 | |
DK192866A DK127234B (en) | 1965-04-15 | 1966-04-14 | Continuous process for the production of foam product sheets and apparatus for carrying out the process. |
CH547466A CH459555A (en) | 1965-04-15 | 1966-04-15 | Process for obtaining cellular products in thermoplastic resin |
CH60668A CH456131A (en) | 1965-04-15 | 1966-04-15 | Apparatus for the manufacture of cellular products in synthetic resin |
FR83268A FR91244E (en) | 1965-04-15 | 1966-11-10 | Process and devices for obtaining cellular products in thermoplastic resin |
FR87044A FR92122E (en) | 1965-04-15 | 1966-12-12 | Process and devices for obtaining cellular products in thermoplastic resin |
JP42069644A JPS5233151B1 (en) | 1965-04-15 | 1967-10-31 | |
AT994467A AT319575B (en) | 1965-04-15 | 1967-11-03 | Process for the production of foam bodies |
DE1967C0043741 DE1704553C3 (en) | 1965-04-15 | 1967-11-04 | Process for the continuous production of foamed webs from completely foamed plastic beads |
DE19671753811 DE1753811C3 (en) | 1965-04-15 | 1967-11-04 | Process for the continuous production of foamed webs from completely foamed plastic beads |
FI299167A FI49372C (en) | 1965-04-15 | 1967-11-06 | Method and apparatus for making cellular products from thermoplastic resin. |
SE1526867A SE399010B (en) | 1965-04-15 | 1967-11-07 | PROCEDURE FOR CONTINUOUS MANUFACTURE OF CELL - SHEETS OR PLATES OF SYNTHETIC THERMOPLASTIC RESIN |
GB5075167A GB1148940A (en) | 1965-04-15 | 1967-11-08 | Process for producing a cellular product from expanded pearls of synthetic resin |
BE706296D BE706296A (en) | 1965-04-15 | 1967-11-09 | |
JP42075742A JPS4843944B1 (en) | 1965-04-15 | 1967-11-27 | |
AT1084967A AT308383B (en) | 1965-04-15 | 1967-11-30 | Process for the production of foam bodies from thermoplastic material |
SE1683567A SE395239B (en) | 1965-04-15 | 1967-12-07 | PROCEDURE FOR THE PREPARATION OF POLYSTYRENE FOAM PRODUCTS OF EXPANDED ELEMENTS OR PEARLS IN THE FORM OF PLATES OR DISCS |
GB5589567A GB1181889A (en) | 1965-04-15 | 1967-12-08 | Process for producing a Cellular Product from Expanded Pearls of Synthetic Resin |
DE1967C0044100 DE1704557C3 (en) | 1965-04-15 | 1967-12-09 | Process for the continuous production of foamed webs, in particular from polystyrene |
NO17092267A NO141338C (en) | 1965-04-15 | 1967-12-11 | PROCEDURE FOR THE PREPARATION OF POLYSTYRENCY FOAM PRODUCTS OF EXPANDED ELEMENTS OR PEARLS |
LU55063D LU55063A1 (en) | 1965-04-15 | 1967-12-11 | |
NL6716789A NL6716789A (en) | 1965-04-15 | 1967-12-11 | |
BE707817D BE707817A (en) | 1965-04-15 | 1967-12-11 | |
ES348143A ES348143A2 (en) | 1965-04-15 | 1967-12-11 | Process for producing a cellular product from expanded pearls of synthetic resin |
CH1742067A CH473964A (en) | 1965-04-15 | 1967-12-12 | Manufacturing process of a floating floor support |
FR135997A FR93885E (en) | 1965-04-15 | 1968-01-15 | Process and devices for obtaining cellular products in thermoplastic resin. |
AT1161368A AT314812B (en) | 1965-04-15 | 1968-11-28 | Process for the production of foam bodies |
GB47169A GB1222641A (en) | 1965-04-15 | 1969-01-03 | Process for producing a cellular product from expanded pearls of synthetic resin |
NL6900246A NL6900246A (en) | 1965-04-15 | 1969-01-07 | |
DE19691901681 DE1901681C3 (en) | 1965-04-15 | 1969-01-14 | Method and apparatus for the continuous production of foamed webs |
FR6929272A FR2056060A6 (en) | 1965-04-15 | 1969-08-27 | Foamed polystyrene |
AT742370A AT327526B (en) | 1965-04-15 | 1970-08-14 | PROCESS FOR MANUFACTURING FOAM BODIES |
GB1290269D GB1290269A (en) | 1965-04-15 | 1970-08-20 | |
US00066970A US3800018A (en) | 1965-04-15 | 1970-08-26 | Fabrication of cellular resinous products |
NL7012618A NL7012618A (en) | 1965-04-15 | 1970-08-26 | |
DE19702042365 DE2042365C3 (en) | 1965-04-15 | 1970-08-26 | Process for the continuous production of foamed webs from completely foamed plastic beads |
US105661A US3863908A (en) | 1965-04-15 | 1971-01-01 | Cellular, resinous products and methods and apparatus for making them |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR13377A FR1440106A (en) | 1965-04-15 | 1965-04-15 | Process and devices for obtaining cellular products in thermoplastic resin |
FR83268A FR91244E (en) | 1965-04-15 | 1966-11-10 | Process and devices for obtaining cellular products in thermoplastic resin |
FR87044A FR92122E (en) | 1965-04-15 | 1966-12-12 | Process and devices for obtaining cellular products in thermoplastic resin |
Publications (1)
Publication Number | Publication Date |
---|---|
FR91244E true FR91244E (en) | 1968-05-03 |
Family
ID=27242082
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR13377A Expired FR1440106A (en) | 1965-04-15 | 1965-04-15 | Process and devices for obtaining cellular products in thermoplastic resin |
FR83268A Expired FR91244E (en) | 1965-04-15 | 1966-11-10 | Process and devices for obtaining cellular products in thermoplastic resin |
FR87044A Expired FR92122E (en) | 1965-04-15 | 1966-12-12 | Process and devices for obtaining cellular products in thermoplastic resin |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR13377A Expired FR1440106A (en) | 1965-04-15 | 1965-04-15 | Process and devices for obtaining cellular products in thermoplastic resin |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR87044A Expired FR92122E (en) | 1965-04-15 | 1966-12-12 | Process and devices for obtaining cellular products in thermoplastic resin |
Country Status (14)
Country | Link |
---|---|
JP (2) | JPS5233151B1 (en) |
AT (3) | AT301854B (en) |
BE (3) | BE679070A (en) |
CH (2) | CH456131A (en) |
DE (4) | DE1629321B2 (en) |
DK (1) | DK127234B (en) |
ES (1) | ES348143A2 (en) |
FI (2) | FI46702C (en) |
FR (3) | FR1440106A (en) |
GB (3) | GB1093238A (en) |
LU (2) | LU50900A1 (en) |
NL (2) | NL6604171A (en) |
NO (1) | NO141338C (en) |
SE (2) | SE399010B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2119827B1 (en) * | 1970-12-14 | 1974-04-26 | Lambert Freres & Cie | |
CA1011070A (en) * | 1972-05-30 | 1977-05-31 | Richard H. Immel | Method for bonding expanded polymeric parts |
SE7412287L (en) * | 1974-09-30 | 1976-03-31 | Gullfiber Ab | DEVICE FOR THE MANUFACTURE OF POROS THERMOPLASTIC BLOCKS IN CONTINUOUS PROCEDURE |
JPS5396639U (en) * | 1977-01-10 | 1978-08-05 | ||
FR2529826A1 (en) * | 1982-07-09 | 1984-01-13 | Elf Isolation | Continuous process for the moulding of panels or of cellular plates from pre-expanded granules of thermoplastic material and device for the implementation of the said process. |
DE3416985A1 (en) * | 1984-05-08 | 1985-11-14 | Held, Kurt, 7218 Trossingen | METHOD AND DEVICE FOR CONTINUOUSLY PRESSING MATERIAL RAILS |
JP2002331541A (en) * | 2001-05-11 | 2002-11-19 | Araco Corp | Method and apparatus for manufacturing molding |
CZ305937B6 (en) * | 2012-05-10 | 2016-05-11 | Novopol A.S. | Process for producing moldings |
CZ305936B6 (en) * | 2012-05-10 | 2016-05-11 | Novopol A.S. | Expanded polystyrene molding and process for producing moldings of expanded polystyrene |
-
1965
- 1965-04-15 FR FR13377A patent/FR1440106A/en not_active Expired
- 1965-12-01 AT AT1083165A patent/AT301854B/en not_active IP Right Cessation
- 1965-12-29 FI FI311765A patent/FI46702C/en active
-
1966
- 1966-03-30 NL NL6604171A patent/NL6604171A/xx unknown
- 1966-04-01 GB GB1456566A patent/GB1093238A/en not_active Expired
- 1966-04-05 DE DE1966C0038706 patent/DE1629321B2/en active Granted
- 1966-04-05 BE BE679070A patent/BE679070A/xx unknown
- 1966-04-14 LU LU50900A patent/LU50900A1/xx unknown
- 1966-04-14 DK DK192866A patent/DK127234B/en unknown
- 1966-04-15 CH CH60668A patent/CH456131A/en unknown
- 1966-04-15 CH CH547466A patent/CH459555A/en unknown
- 1966-11-10 FR FR83268A patent/FR91244E/en not_active Expired
- 1966-12-12 FR FR87044A patent/FR92122E/en not_active Expired
-
1967
- 1967-10-31 JP JP42069644A patent/JPS5233151B1/ja active Pending
- 1967-11-03 AT AT994467A patent/AT319575B/en active
- 1967-11-04 DE DE1967C0043741 patent/DE1704553C3/en not_active Expired
- 1967-11-04 DE DE19671753811 patent/DE1753811C3/en not_active Expired
- 1967-11-06 FI FI299167A patent/FI49372C/en active
- 1967-11-07 SE SE1526867A patent/SE399010B/en unknown
- 1967-11-08 GB GB5075167A patent/GB1148940A/en not_active Expired
- 1967-11-09 BE BE706296D patent/BE706296A/xx not_active Expired
- 1967-11-27 JP JP42075742A patent/JPS4843944B1/ja active Pending
- 1967-11-30 AT AT1084967A patent/AT308383B/en not_active IP Right Cessation
- 1967-12-07 SE SE1683567A patent/SE395239B/en unknown
- 1967-12-08 GB GB5589567A patent/GB1181889A/en not_active Expired
- 1967-12-09 DE DE1967C0044100 patent/DE1704557C3/en not_active Expired
- 1967-12-11 BE BE707817D patent/BE707817A/xx unknown
- 1967-12-11 ES ES348143A patent/ES348143A2/en not_active Expired
- 1967-12-11 NL NL6716789A patent/NL6716789A/xx unknown
- 1967-12-11 NO NO17092267A patent/NO141338C/en unknown
- 1967-12-11 LU LU55063D patent/LU55063A1/xx unknown
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