BE702966A - - Google Patents
Info
- Publication number
- BE702966A BE702966A BE702966DA BE702966A BE 702966 A BE702966 A BE 702966A BE 702966D A BE702966D A BE 702966DA BE 702966 A BE702966 A BE 702966A
- Authority
- BE
- Belgium
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
- D01D5/423—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by fibrillation of films or filaments
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0063—Cutting longitudinally
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B29L2007/001—Flat articles, e.g. films or sheets having irregular or rough surfaces
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/47—Processes of splitting film, webs or sheets
-
- 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
- Y10T225/00—Severing by tearing or breaking
- Y10T225/30—Breaking or tearing apparatus
- Y10T225/35—Work-parting pullers [bursters]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
- Paints Or Removers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB0091793 | 1967-04-01 | ||
DEB0092161 | 1967-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE702966A true BE702966A (fr) | 1968-01-15 |
Family
ID=25968302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE702966D BE702966A (fr) | 1967-04-01 | 1967-08-23 |
Country Status (13)
Country | Link |
---|---|
US (2) | US3594870A (fr) |
AT (1) | AT314063B (fr) |
BE (1) | BE702966A (fr) |
CH (1) | CH482034A (fr) |
ES (2) | ES344596A1 (fr) |
FR (1) | FR1550191A (fr) |
GB (1) | GB1176357A (fr) |
IE (1) | IE31943B1 (fr) |
LU (1) | LU54370A1 (fr) |
NL (1) | NL6711840A (fr) |
NO (1) | NO123654B (fr) |
PL (1) | PL71260B1 (fr) |
SE (1) | SE320144B (fr) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3950475A (en) * | 1969-02-05 | 1976-04-13 | Smith & Nephew Polyfabrik Limited | Method of producing banded fibers from a thermoplastic sheet |
US3919377A (en) * | 1969-06-27 | 1975-11-11 | Smith & Nephew Polyfab | Production of tapes and fibrous materials |
CA956421A (en) * | 1970-04-10 | 1974-10-22 | Scragg (Ernest) And Sons Limited | Textile process and apparatus |
US3817671A (en) * | 1970-09-01 | 1974-06-18 | J Lemelson | Apparatus for forming sheet material |
US4101620A (en) * | 1970-11-03 | 1978-07-18 | Dynamit Nobel Aktiengesellschaft | Process for producing a plastic sheet having parallel ribs extruding from both surfaces |
US3761552A (en) * | 1971-02-12 | 1973-09-25 | Chevron Res | Process for making moresque yarn from polymer film |
US4134951A (en) * | 1971-08-31 | 1979-01-16 | Smith & Nephew Polyfabrik Limited | Production of filaments |
DE2450225C3 (de) * | 1974-10-23 | 1986-07-10 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Extruder-Kalander zum Verarbeiten von plastischen Massen |
IT1033844B (it) * | 1975-08-21 | 1979-08-10 | Attucci E | Macchina per la lavorazione di materiale plastico a pellicola tubolare e simile |
US4129632A (en) * | 1977-12-21 | 1978-12-12 | Chevron Research Company | Method for extruding slitting and fibrillating thermoplastic film tapes |
US4235574A (en) * | 1979-01-17 | 1980-11-25 | Eastman Kodak Company | Spinneret orifice cross-section |
IT1141842B (it) * | 1980-11-17 | 1986-10-08 | Omv Spa Off Mecc Veronese | Procedimento per la fabbricazione di oggetti in polistirolo cristallo |
US4457685A (en) * | 1982-01-04 | 1984-07-03 | Mobil Oil Corporation | Extrusion die for shaped extrudate |
US4408977A (en) * | 1982-06-21 | 1983-10-11 | Eastman Kodak Company | Spinneret orifice cross-sections |
US4536362A (en) * | 1983-10-06 | 1985-08-20 | Mobil Oil Corporation | Method for producing longitudinally ribbed plastic film |
US5238631A (en) * | 1985-11-08 | 1993-08-24 | Kyowa Limited | Process of making non-metallic polymeric twist ties |
US5079066A (en) * | 1988-05-25 | 1992-01-07 | Minnesota Mining And Manufacturing Company | Tape having improved tear strength |
US5173141A (en) * | 1988-05-25 | 1992-12-22 | Minnesota Mining And Manufacturing Company | Preparing tape having improved tear strength |
US5145544A (en) * | 1989-08-01 | 1992-09-08 | Minnesota Mining And Manufacturing Company | Method for preparing tape having improved tear strength |
US5271728A (en) * | 1989-11-21 | 1993-12-21 | Buhler Ag | Apparatus with detachable teeth for pressing out raw materials |
DE4026337A1 (de) * | 1990-08-21 | 1992-02-27 | Hench Automatik App Masch | Vorrichtung zum abkuehlen und granulieren von schmelzfluessigen straengen |
US5366782A (en) * | 1992-08-25 | 1994-11-22 | The Procter & Gamble Company | Polymeric web having deformed sections which provide a substantially increased elasticity to the web |
WO1996020820A1 (fr) * | 1993-05-20 | 1996-07-11 | Miller Jack V | Procede de fabrication de fibres optiques |
US5393470A (en) * | 1993-05-20 | 1995-02-28 | Miller; Jack V. | Process for manufacturing optical fibers |
US5700413A (en) * | 1996-03-27 | 1997-12-23 | Xerox Corporation | Extruder die plate with removable splitters |
US6147017A (en) * | 1997-02-26 | 2000-11-14 | E. I. Du Pont De Nemours And Company | Industrial fibers with sinusoidal cross sections and products made therefrom |
US6037047A (en) * | 1997-02-26 | 2000-03-14 | E. I. Du Pont De Nemours And Company | Industrial fibers with diamond cross sections and products made therefrom |
US5922366A (en) * | 1997-02-26 | 1999-07-13 | E.I. Du Pont De Nemours And Company | Spinnerets with diamond shaped capillaries |
US5989683A (en) * | 1997-09-19 | 1999-11-23 | Bedford Industries, Inc. | Wireless polymeric twist tie |
US6663809B1 (en) | 2000-07-10 | 2003-12-16 | Bedford Industries, Inc. | Wireless polymeric twist tie |
US7018946B2 (en) * | 2003-02-14 | 2006-03-28 | Invista North America S.A.R.L. | Fabric including polymer filaments having profiled cross-section |
US7241483B2 (en) * | 2004-06-08 | 2007-07-10 | 3M Innovative Properties Company | Reticulated webs and method of making |
US7678316B2 (en) * | 2004-06-08 | 2010-03-16 | 3M Innovative Properties Company | Coextruded profiled webs |
US7897081B2 (en) * | 2004-12-30 | 2011-03-01 | 3M Innovative Properties Company | Method of extruding articles |
US7622180B2 (en) * | 2006-07-10 | 2009-11-24 | 3M Innovative Properties Company | Net hook fasteners |
US8025457B2 (en) * | 2008-09-29 | 2011-09-27 | Prs Mediterranean Ltd. | Geocell for load support applications |
US8221669B2 (en) * | 2009-09-30 | 2012-07-17 | Stratasys, Inc. | Method for building three-dimensional models in extrusion-based digital manufacturing systems using ribbon filaments |
WO2011126713A2 (fr) * | 2010-03-30 | 2011-10-13 | 3M Innovative Properties Company | Duplication d'extrusion profilée |
US20140021644A1 (en) * | 2012-07-17 | 2014-01-23 | Paragon Films, Inc. | Dies and Methods for Improving Physical Properties of Stretch Film |
EP3584357A1 (fr) * | 2013-10-29 | 2019-12-25 | Braskem S.A. | Système et procédé continus de fabrication d'au moins un fil de polymère |
RU2727284C2 (ru) * | 2015-12-28 | 2020-07-21 | Болье Интернэшнл Груп Нв | Моноволокна искусственного дерна и способы их производства |
US12023841B2 (en) | 2018-02-28 | 2024-07-02 | 3M Innovative Properties Company | Coextruded polymeric article and method of making the same |
CN111801212B (zh) | 2018-02-28 | 2022-09-06 | 3M创新有限公司 | 共挤出聚合物制品及其制备方法 |
TWI705164B (zh) * | 2020-02-05 | 2020-09-21 | 三芳化學工業股份有限公司 | 熱塑性聚氨酯纖維及其製作方法 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1661069A (en) * | 1925-11-14 | 1928-02-28 | Goodrich Co B F | Method and apparatus for making strip rubber |
FR726766A (fr) * | 1930-11-17 | 1932-06-03 | Hagen Ag Gottfried | Fils et bandes en caoutchouc |
US2327087A (en) * | 1940-12-18 | 1943-08-17 | Du Pont | Manufacture of staple fibers |
US2375542A (en) * | 1944-03-16 | 1945-05-08 | United Autographic Register Co | Bursting machine |
US2464746A (en) * | 1946-10-17 | 1949-03-15 | Gering Products Inc | Method of manufacturing thermoplastic pellets |
US2581922A (en) * | 1947-02-05 | 1952-01-08 | Firestone Tire & Rubber Co | Apparatus for and method of forming filaments |
US2582294A (en) * | 1947-10-31 | 1952-01-15 | Dow Chemical Co | Continuous method for cooling and shaping thermoplastics |
US2723424A (en) * | 1948-05-27 | 1955-11-15 | Duratube & Wire Ltd | Apparatus for the manufacture of patterned thermoplastic strip material |
US2682292A (en) * | 1950-08-29 | 1954-06-29 | Reliance Steel Prod Co | Continuous system for forming fiber and plastic shapes |
US2748401A (en) * | 1952-06-30 | 1956-06-05 | Hedwin Corp | Extruded flexible and hollow articles and method of making same |
NL102982C (fr) * | 1955-03-19 | |||
US2800180A (en) * | 1955-07-06 | 1957-07-23 | Uarco Inc | Method of bursting unequal width portions from continuous stationery |
US3350488A (en) * | 1958-05-27 | 1967-10-31 | Du Pont | Process for the production of sharp-edge fibers |
BE629367A (fr) * | 1962-03-09 | |||
NL302406A (fr) * | 1962-12-24 | 1900-01-01 | ||
US3164948A (en) * | 1963-02-28 | 1965-01-12 | Wall Rope Works Inc | Cordage and methods of manufacture thereof |
FR1369155A (fr) * | 1963-09-11 | 1964-08-07 | British Cellophane Ltd | Procédé et appareil pour la fabrication de pellicules ou feuilles flexibles |
US3333032A (en) * | 1963-11-12 | 1967-07-25 | Union Carbide Corp | Treated polymer surfaces of shaped articles |
US3496044A (en) * | 1964-12-31 | 1970-02-17 | Rowland Products Inc | Methods for making patterned sheet material |
US3488415A (en) * | 1965-07-21 | 1970-01-06 | Smith & Nephew | Production of net-like fabrics from plastic material |
GB1117527A (en) * | 1965-08-06 | 1968-06-19 | Ici Ltd | Thermoplastic sheet |
GB1130598A (en) * | 1966-05-25 | 1968-10-16 | Ici Ltd | Extruded sheet |
US3746607A (en) * | 1966-11-17 | 1973-07-17 | Johnson & Johnson | Sheet material |
US3515778A (en) * | 1967-03-02 | 1970-06-02 | Du Pont | Continuous molding of thermoplastic resin |
US3470685A (en) * | 1967-10-10 | 1969-10-07 | Hercules Inc | Synthetic textile yarn |
US3495752A (en) * | 1969-05-07 | 1970-02-17 | Hercules Inc | Method for making yarn by fibrillation of ribbons of plastic material |
-
1967
- 1967-07-17 GB GB3272467A patent/GB1176357A/en not_active Expired
- 1967-08-12 NO NO169352A patent/NO123654B/no unknown
- 1967-08-23 BE BE702966D patent/BE702966A/xx unknown
- 1967-08-24 LU LU54370D patent/LU54370A1/xx unknown
- 1967-08-29 NL NL6711840A patent/NL6711840A/xx unknown
- 1967-08-30 ES ES344596A patent/ES344596A1/es not_active Expired
- 1967-09-01 SE SE1216267A patent/SE320144B/xx unknown
- 1967-09-04 FR FR1550191D patent/FR1550191A/fr not_active Expired
- 1967-09-04 AT AT808667A patent/AT314063B/de not_active IP Right Cessation
- 1967-09-05 PL PL1967122463A patent/PL71260B1/pl unknown
- 1967-09-05 CH CH1240567A patent/CH482034A/de not_active IP Right Cessation
- 1967-11-09 IE IE1337/67A patent/IE31943B1/xx unknown
-
1968
- 1968-09-27 ES ES358595A patent/ES358595A1/es not_active Expired
-
1969
- 1969-09-08 US US3594870D patent/US3594870A/en not_active Expired - Lifetime
-
1973
- 1973-03-26 US US05/344,566 patent/US4083914A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AT314063B (de) | 1974-03-25 |
SE320144B (fr) | 1970-02-02 |
ES344596A1 (es) | 1968-12-16 |
IE31943B1 (en) | 1973-02-21 |
US3594870A (en) | 1971-07-27 |
ES358595A1 (es) | 1970-06-16 |
NO123654B (fr) | 1971-12-27 |
FR1550191A (fr) | 1968-12-20 |
GB1176357A (en) | 1970-01-01 |
IE31943L (en) | 1968-10-01 |
LU54370A1 (fr) | 1967-10-24 |
PL71260B1 (en) | 1974-04-30 |
NL6711840A (fr) | 1968-10-02 |
US4083914A (en) | 1978-04-11 |
CH482034A (de) | 1969-11-30 |