NO124400B - - Google Patents
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- Publication number
- NO124400B NO124400B NO1181/68A NO118168A NO124400B NO 124400 B NO124400 B NO 124400B NO 1181/68 A NO1181/68 A NO 1181/68A NO 118168 A NO118168 A NO 118168A NO 124400 B NO124400 B NO 124400B
- Authority
- NO
- Norway
- Prior art keywords
- flask
- supply element
- gas
- end piece
- glass
- Prior art date
Links
- 239000011521 glass Substances 0.000 claims description 30
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 15
- 229910052783 alkali metal Inorganic materials 0.000 claims description 9
- 150000001340 alkali metals Chemical class 0.000 claims description 9
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 9
- 229910052756 noble gas Inorganic materials 0.000 claims description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 6
- 229910052753 mercury Inorganic materials 0.000 claims description 6
- 229910052724 xenon Inorganic materials 0.000 claims description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000007496 glass forming Methods 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 2
- -1 sodium Chemical class 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 claims 1
- 238000010276 construction Methods 0.000 description 12
- 230000004927 fusion Effects 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 6
- 239000010955 niobium Substances 0.000 description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
- C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
- C04B37/025—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of glass or ceramic material
-
- 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
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
- C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/10—Glass interlayers, e.g. frit or flux
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
- C04B2237/343—Alumina or aluminates
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
- C04B2237/345—Refractory metal oxides
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/62—Forming laminates or joined articles comprising holes, channels or other types of openings
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
- C04B2237/765—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc at least one member being a tube
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/84—Joining of a first substrate with a second substrate at least partially inside the first substrate, where the bonding area is at the inside of the first substrate, e.g. one tube inside another tube
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/88—Joining of two substrates, where a substantial part of the joining material is present outside of the joint, leading to an outside joining of the joint
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL676704681A NL154865B (nl) | 1967-03-31 | 1967-03-31 | Elektrische gasontladingslamp met een omhulling van dichtgesinterd aluminiumoxyde en werkwijze voor het vervaardigen van een dergelijke gasontladingslamp. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO124400B true NO124400B (de) | 1972-04-10 |
Family
ID=19799727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO1181/68A NO124400B (de) | 1967-03-31 | 1968-03-28 |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US3609437A (de) |
| JP (1) | JPS6213792B1 (de) |
| AT (1) | AT279734B (de) |
| BE (1) | BE713016A (de) |
| CH (1) | CH483117A (de) |
| DK (1) | DK139050B (de) |
| ES (1) | ES352137A1 (de) |
| FR (1) | FR1557527A (de) |
| GB (1) | GB1205871A (de) |
| NL (1) | NL154865B (de) |
| NO (1) | NO124400B (de) |
| SE (1) | SE333607B (de) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3895248A (en) * | 1969-03-11 | 1975-07-15 | Philips Corp | Gas discharge device with glow discharge igniting structure |
| NL7003667A (de) * | 1970-03-14 | 1971-09-16 | ||
| JPS4893180A (de) * | 1972-03-08 | 1973-12-03 | ||
| US3967871A (en) * | 1972-06-23 | 1976-07-06 | Egyesult Izzolampa Es Villamossagi Resvenytarsasag | Process for manufacturing tubeless vacuum electric discharge lamps |
| US3845343A (en) * | 1973-05-02 | 1974-10-29 | Gen Electric | Inside bulb coating for ultraviolet lamp |
| US3855494A (en) * | 1973-08-29 | 1974-12-17 | Westinghouse Electric Corp | Ceramic arc lamp construction |
| US3866280A (en) * | 1973-12-26 | 1975-02-18 | Gte Sylvania Inc | Method of manufacturing high pressure sodium arc discharge lamp |
| US3996487A (en) * | 1975-05-14 | 1976-12-07 | Westinghouse Electric Corporation | Ceramic discharge lamp with reduced heat drain |
| US4034252A (en) * | 1975-12-15 | 1977-07-05 | General Electric Company | Ceramic lamp seal and control of sealing frit distribution |
| US3992642A (en) * | 1975-12-15 | 1976-11-16 | Mcvey Charles I | Ceramic envelope plug and lead wire and seal |
| NL183092C (nl) * | 1976-08-05 | 1988-07-18 | Philips Nv | Gasontladingslamp. |
| NL7612120A (nl) * | 1976-11-02 | 1978-05-05 | Philips Nv | Elektrische gasontladingslamp. |
| HU174714B (hu) * | 1977-01-06 | 1980-03-28 | Egyesuelt Izzolampa | Ehlektricheskaja razrjadnaja lampa |
| NL181764C (nl) * | 1977-04-15 | 1987-10-16 | Philips Nv | Hogedrukmetaaldampontladingslamp. |
| NL178108C (nl) * | 1978-04-10 | 1986-10-16 | Philips Nv | Elektrische gasontladingslamp. |
| JPS53166577U (de) * | 1978-04-27 | 1978-12-27 | ||
| US4281274A (en) * | 1979-08-01 | 1981-07-28 | General Electric Co. | Discharge lamp having vitreous shield |
| HU178880B (en) * | 1980-06-20 | 1982-07-28 | Egyesuelt Izzolampa | Sodium discharge lamp with aluminium oxide discharge tube and process for the production thereof |
| JPS5739116A (en) * | 1980-08-18 | 1982-03-04 | Matsushita Electric Ind Co Ltd | Jig for heat treatment |
| US4382205A (en) * | 1980-09-02 | 1983-05-03 | General Electric Company | Metal vapor arc lamp having thermal link diminishable in heat conduction |
| GB2105904B (en) * | 1981-09-04 | 1985-10-23 | Emi Plc Thorn | High pressure discharge lamps |
| NL8200783A (nl) * | 1982-02-26 | 1983-09-16 | Philips Nv | Hogedrukontladingslamp. |
| US4988318A (en) * | 1983-03-10 | 1991-01-29 | Gte Products Corporation | Unsaturated vapor high pressure sodium lamp arc tube fabrication process |
| CA1246136A (en) * | 1983-03-10 | 1988-12-06 | Philip J. White | Arc tube fabrication process |
| US5026311A (en) * | 1983-03-10 | 1991-06-25 | Gte Products Corporation | Arc tube fabrication process |
| CA1241365A (en) * | 1983-03-10 | 1988-08-30 | John A. Scholz | Unsaturated vapor high pressure sodium lamp arc tube fabrication process |
| EP0187401A1 (de) * | 1984-12-18 | 1986-07-16 | Koninklijke Philips Electronics N.V. | Hochdruckentladungslampe |
| US4868457A (en) * | 1985-01-14 | 1989-09-19 | General Electric Company | Ceramic lamp end closure and inlead structure |
| US4774431A (en) * | 1986-09-29 | 1988-09-27 | North American Philips Lighting Corp. | Arc tube wire support |
| HU196531B (en) * | 1986-09-29 | 1988-11-28 | Philips Nv | High-pressure discharge lamp with wire-suspended discharge tube |
| US4702717A (en) * | 1987-01-30 | 1987-10-27 | Gte Products Corporation | Method of making electric lamp with internal conductive reflector |
| US4804889A (en) * | 1987-12-18 | 1989-02-14 | Gte Products Corporation | Electrode feedthrough assembly for arc discharge lamp |
| US5198722A (en) * | 1990-10-31 | 1993-03-30 | North American Philips Corporation | High-pressure discharge lamp with end seal evaporation barrier |
| DE4037721C2 (de) * | 1990-11-27 | 2003-02-13 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zur Herstellung einer Natriumhochdrucklampe sowie dafür geeignete Vorrichtung |
| US20020117965A1 (en) * | 2001-02-23 | 2002-08-29 | Osram Sylvania Inc. | High buffer gas pressure ceramic arc tube and method and apparatus for making same |
| US6641449B2 (en) * | 2001-04-24 | 2003-11-04 | Osram Sylvania Inc. | High pressure lamp bulb and method of induction sealing |
| GB2383486B (en) * | 2001-12-19 | 2005-02-16 | Microwave Solutions Ltd | Detector device |
| US6976372B2 (en) * | 2002-10-31 | 2005-12-20 | Corning Incorporated | Sealing lighting device component assembly with solder glass preform by using induction heating |
| US7040121B2 (en) * | 2002-10-31 | 2006-05-09 | Corning Incorporated | Sealing lighting device component assembly with solder glass preform by using infrared radiation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1257964B (de) * | 1965-03-11 | 1968-01-04 | Patra Patent Treuhand | Elektrische Lampe, insbesondere Alkalimetalldampfentladungslampe, mit einem Gefaess aus transparentem Aluminiumoxyd |
| US3363134A (en) * | 1965-12-08 | 1968-01-09 | Gen Electric | Arc discharge lamp having polycrystalline ceramic arc tube |
| US3453477A (en) * | 1967-02-16 | 1969-07-01 | Gen Electric | Alumina-ceramic sodium vapor lamp |
-
1967
- 1967-03-31 NL NL676704681A patent/NL154865B/xx not_active IP Right Cessation
-
1968
- 1968-03-08 US US711763A patent/US3609437A/en not_active Expired - Lifetime
- 1968-03-28 GB GB04900/68A patent/GB1205871A/en not_active Expired
- 1968-03-28 NO NO1181/68A patent/NO124400B/no unknown
- 1968-03-28 DK DK134768AA patent/DK139050B/da unknown
- 1968-03-28 AT AT304068A patent/AT279734B/de not_active IP Right Cessation
- 1968-03-28 FR FR1557527D patent/FR1557527A/fr not_active Expired
- 1968-03-28 CH CH461168A patent/CH483117A/de not_active IP Right Cessation
- 1968-03-28 JP JP43019808A patent/JPS6213792B1/ja active Pending
- 1968-03-29 ES ES352137A patent/ES352137A1/es not_active Expired
- 1968-03-29 BE BE713016D patent/BE713016A/xx not_active IP Right Cessation
- 1968-03-29 SE SE04226/68A patent/SE333607B/xx unknown
-
1970
- 1970-07-20 US US00063964A patent/US3726582A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1639086B2 (de) | 1975-10-23 |
| GB1205871A (en) | 1970-09-23 |
| AT279734B (de) | 1970-03-10 |
| JPS6213792B1 (de) | 1987-03-28 |
| US3726582A (en) | 1973-04-10 |
| FR1557527A (de) | 1969-02-14 |
| DE1639086A1 (de) | 1970-05-27 |
| BE713016A (de) | 1968-09-30 |
| ES352137A1 (es) | 1970-04-16 |
| DK139050B (da) | 1978-12-04 |
| NL6704681A (de) | 1968-10-01 |
| SE333607B (de) | 1971-03-22 |
| US3609437A (en) | 1971-09-28 |
| DK139050C (de) | 1979-05-14 |
| NL154865B (nl) | 1977-10-17 |
| CH483117A (de) | 1969-12-15 |
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