BE656368A - - Google Patents
Info
- Publication number
- BE656368A BE656368A BE656368A BE656368A BE656368A BE 656368 A BE656368 A BE 656368A BE 656368 A BE656368 A BE 656368A BE 656368 A BE656368 A BE 656368A BE 656368 A BE656368 A BE 656368A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
- C04B33/323—Burning methods involving melting, fusion or softening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/44—Valves specially adapted therefor; Regulating devices
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/928—Carbides of actinides
-
- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/22—Remelting metals with heating by wave energy or particle radiation
- C22B9/228—Remelting metals with heating by wave energy or particle radiation by particle radiation, e.g. electron beams
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
- C30B11/04—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt
- C30B11/08—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt every component of the crystal composition being added during the crystallisation
- C30B11/10—Solid or liquid components, e.g. Verneuil method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0035—Devices for monitoring the weight of quantities added to the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0025—Charging or loading melting furnaces with material in the solid state
- F27D3/0032—Charging or loading melting furnaces with material in the solid state using an air-lock
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/10—Charging directly from hoppers or shoots
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/42—Selection of substances for use as reactor fuel
- G21C3/58—Solid reactor fuel Pellets made of fissile material
- G21C3/62—Ceramic fuel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
- H01J37/305—Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0038—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising shakers
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- 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
- Y10S266/00—Metallurgical apparatus
- Y10S266/90—Metal melting furnaces, e.g. cupola type
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- High Energy & Nuclear Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Closures For Containers (AREA)
- Reciprocating Pumps (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Details (AREA)
- Continuous Casting (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR930455A FR1360841A (fr) | 1963-04-04 | 1963-04-04 | Perfectionnements apportés aux procédés de coulée, notamment de lingots, et en particulier de carbure d'uranium |
FR956480A FR84908E (fr) | 1963-04-04 | 1963-12-09 | Perfectionnements apportés aux procédés de coulée, notamment de lingots, et en particulier de carbure d'uranium |
US335580A US3231153A (en) | 1964-01-03 | 1964-01-03 | Multiple spray rate pressurized package dispenser |
Publications (1)
Publication Number | Publication Date |
---|---|
BE656368A true BE656368A (fr) | 1965-03-16 |
Family
ID=27247141
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE645828D BE645828A (fr) | 1963-04-04 | 1964-03-27 | |
BE656367A BE656367A (fr) | 1963-04-04 | 1964-11-27 | |
BE656368A BE656368A (fr) | 1963-04-04 | 1964-11-27 | |
BE657786A BE657786A (fr) | 1963-04-04 | 1964-12-30 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE645828D BE645828A (fr) | 1963-04-04 | 1964-03-27 | |
BE656367A BE656367A (fr) | 1963-04-04 | 1964-11-27 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE657786A BE657786A (fr) | 1963-04-04 | 1964-12-30 |
Country Status (11)
Country | Link |
---|---|
US (3) | US3338988A (fr) |
BE (4) | BE645828A (fr) |
CH (3) | CH433608A (fr) |
DE (3) | DE1296748B (fr) |
FI (1) | FI40525B (fr) |
FR (1) | FR84908E (fr) |
GB (4) | GB1002794A (fr) |
IL (3) | IL22562A (fr) |
LU (3) | LU45751A1 (fr) |
NL (4) | NL6403591A (fr) |
SE (2) | SE316547B (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1427925A (fr) * | 1964-12-29 | 1966-02-11 | Electro Refractaire | Procédé et appareil pour la fusion et la solidification continues des réfractaires électrofondus |
FR1445684A (fr) * | 1965-06-03 | 1966-07-15 | Commissariat Energie Atomique | Dispositif de coulée continue de matériaux réfractaires |
US3528484A (en) * | 1967-09-15 | 1970-09-15 | Edelstahlwerk Veb | Crystallizers for vacuum-melting installations,particularly electronbeam melting furnaces |
US3590777A (en) * | 1969-03-13 | 1971-07-06 | United Aircarft Corp | Ingot feed drive |
US3570449A (en) * | 1969-03-13 | 1971-03-16 | United Aircraft Corp | Sensor system for a vacuum deposition apparatus |
US3590242A (en) * | 1969-06-12 | 1971-06-29 | Gen Electric | Making fused thorium carbide-tungsten cathodes for electron guns |
EP0289116A1 (fr) * | 1987-03-04 | 1988-11-02 | Westinghouse Electric Corporation | Procédé et dispositif pour la coulée des matériaux pulvérisés |
DE3740530A1 (de) * | 1987-11-30 | 1989-06-08 | Leybold Ag | Schmelzofen zum erzeugen von strangguss-bloecken in einer schutzgasatmosphaere |
US5142549A (en) * | 1989-09-05 | 1992-08-25 | Bremer Siegfried M K | Remelting apparatus and method for recognition and recovery of noble metals and rare earths |
US5320786A (en) * | 1991-11-27 | 1994-06-14 | The United States Of America As Represented By The Department Of Energy | Zone sintering of ceramic fuels |
EP0615512A1 (fr) * | 1992-06-22 | 1994-09-21 | FERRAYE, Joseph | Systeme universel de propulsion progressive et ou d'atomisation active pour aerosols |
TWI553127B (zh) * | 2015-11-13 | 2016-10-11 | Nat Inst Chung Shan Science & Technology | An electron beam vacuum refining furnace |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246907A (en) * | 1940-04-12 | 1941-06-24 | William R Webster | Continuous molding machine |
US2682691A (en) * | 1949-07-09 | 1954-07-06 | Babcock & Wilcox Co | Continuous casting process and apparatus |
US2586713A (en) * | 1949-07-29 | 1952-02-19 | Babcock & Wilcox Co | Apparatus for controlling the rate of pouring fluid material from one container into another |
US2709284A (en) * | 1950-03-28 | 1955-05-31 | Babcock & Wilcox Co | Control apparatus for and method of continuous casting |
DE903017C (de) * | 1951-01-31 | 1954-02-01 | Sueddeutsche Lab G M B H | Herstellung kleiner Kugeln aus hochschmelzbaren Materialien |
LU31801A1 (fr) * | 1951-11-10 | |||
DE949768C (de) * | 1953-11-11 | 1956-09-27 | Hermann C Starck Ag | Verfahren zur Herstellung von Straengen schwer schmelzbarer metallischer oder nichtmetallischer Stoffe |
US2800519A (en) * | 1953-11-12 | 1957-07-23 | Republic Steel Corp | Method and apparatus for forming ingots |
BE544196A (fr) * | 1955-01-05 | |||
US2902714A (en) * | 1955-08-23 | 1959-09-08 | Herbert G Johnson | Rod extrusion press |
AT201995B (de) * | 1955-12-09 | 1959-02-10 | Emimeta Fabrikationsanstalt | Verfahren und Vorrichtung zur Herstellung von Mehrfarbenschichtblöcken |
US2882570A (en) * | 1956-05-22 | 1959-04-21 | Joseph B Brennan | Continuous vacuum casting |
US2922710A (en) * | 1957-02-19 | 1960-01-26 | Du Pont | Production of refractory metals |
US3101515A (en) * | 1960-06-03 | 1963-08-27 | Stauffer Chemical Co | Electron beam furnace with magnetically guided axial and transverse beams |
DE1157739B (de) * | 1961-07-13 | 1963-11-21 | Heraeus Gmbh W C | Schmelzofen, insbesondere Vakuum-Schmelzofen, mit Mitteln zur Steuerung des Vorschubes der Abschmelzelektrode |
US3183086A (en) * | 1963-05-03 | 1965-05-11 | Kulite Tungsten Co | Method of making porous body with imperviously sealed surface |
-
1963
- 1963-12-09 FR FR956480A patent/FR84908E/fr not_active Expired
-
1964
- 1964-03-26 LU LU45751D patent/LU45751A1/xx unknown
- 1964-03-27 BE BE645828D patent/BE645828A/xx unknown
- 1964-03-28 DE DEC32526A patent/DE1296748B/de active Pending
- 1964-03-30 US US355751A patent/US3338988A/en not_active Expired - Lifetime
- 1964-03-31 GB GB13226/64A patent/GB1002794A/en not_active Expired
- 1964-03-31 CH CH403864A patent/CH433608A/fr unknown
- 1964-04-03 NL NL6403591A patent/NL6403591A/xx unknown
- 1964-11-26 CH CH1530064A patent/CH428109A/fr unknown
- 1964-11-26 CH CH1530164A patent/CH425100A/fr unknown
- 1964-11-27 BE BE656367A patent/BE656367A/xx unknown
- 1964-11-27 BE BE656368A patent/BE656368A/xx unknown
- 1964-11-28 LU LU47467A patent/LU47467A1/xx unknown
- 1964-12-01 LU LU47490A patent/LU47490A1/xx unknown
- 1964-12-04 IL IL22562A patent/IL22562A/xx unknown
- 1964-12-04 IL IL22561A patent/IL22561A/xx unknown
- 1964-12-07 US US416546A patent/US3388736A/en not_active Expired - Lifetime
- 1964-12-07 DE DEC34578A patent/DE1280487B/de active Pending
- 1964-12-07 US US416547A patent/US3388903A/en not_active Expired - Lifetime
- 1964-12-08 SE SE14828/64A patent/SE316547B/xx unknown
- 1964-12-08 NL NL6414245A patent/NL6414245A/xx unknown
- 1964-12-08 NL NL6414244A patent/NL6414244A/xx unknown
- 1964-12-09 DE DE19641458015 patent/DE1458015A1/de active Pending
- 1964-12-09 GB GB50180/64A patent/GB1079920A/en not_active Expired
- 1964-12-09 GB GB50141/64A patent/GB1081329A/en not_active Expired
- 1964-12-09 GB GB50179/64A patent/GB1079919A/en not_active Expired
- 1964-12-13 IL IL22613A patent/IL22613A/xx unknown
- 1964-12-18 SE SE15331/64A patent/SE300095B/xx unknown
- 1964-12-23 FI FI2739/64A patent/FI40525B/fi active
- 1964-12-30 NL NL646415245A patent/NL146455B/xx not_active IP Right Cessation
- 1964-12-30 BE BE657786A patent/BE657786A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
BE656367A (fr) | 1965-03-16 |
LU45751A1 (fr) | 1964-05-26 |
LU47490A1 (fr) | 1965-02-01 |
FR84908E (fr) | 1965-05-07 |
GB1002794A (en) | 1965-08-25 |
IL22613A (en) | 1968-08-22 |
CH428109A (fr) | 1967-01-15 |
US3388736A (en) | 1968-06-18 |
LU47467A1 (fr) | 1965-01-28 |
CH425100A (fr) | 1966-11-30 |
GB1079919A (en) | 1967-08-16 |
DE1296748B (de) | 1969-06-04 |
NL6403591A (fr) | 1964-10-05 |
NL146455B (nl) | 1975-07-15 |
GB1081329A (en) | 1967-08-31 |
BE657786A (fr) | 1965-06-30 |
NL6414245A (fr) | 1965-06-10 |
NL6414244A (fr) | 1965-06-10 |
US3388903A (en) | 1968-06-18 |
DE1280487B (de) | 1968-10-17 |
SE300095B (fr) | 1968-04-01 |
SE316547B (fr) | 1969-10-27 |
GB1079920A (en) | 1967-08-16 |
BE645828A (fr) | 1964-07-16 |
DE1458015A1 (de) | 1968-12-05 |
CH433608A (fr) | 1967-04-15 |
IL22562A (en) | 1968-10-24 |
IL22561A (en) | 1968-11-27 |
FI40525B (fr) | 1968-10-31 |
US3338988A (en) | 1967-08-29 |
NL6415245A (fr) | 1965-07-05 |