US2947628A - Multilayer print film having incorporated coloring material - Google Patents
Multilayer print film having incorporated coloring material Download PDFInfo
- Publication number
- US2947628A US2947628A US615546A US61554656A US2947628A US 2947628 A US2947628 A US 2947628A US 615546 A US615546 A US 615546A US 61554656 A US61554656 A US 61554656A US 2947628 A US2947628 A US 2947628A
- Authority
- US
- United States
- Prior art keywords
- emulsion
- sensitive
- silver halide
- red
- layer
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 title description 10
- 238000004040 coloring Methods 0.000 title description 8
- 239000000839 emulsion Substances 0.000 claims description 177
- 229910052709 silver Inorganic materials 0.000 claims description 51
- 239000004332 silver Substances 0.000 claims description 51
- -1 SILVER HALIDE Chemical class 0.000 claims description 50
- 238000011161 development Methods 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 100
- 239000000975 dye Substances 0.000 description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 239000006096 absorbing agent Substances 0.000 description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- 108010010803 Gelatin Proteins 0.000 description 9
- 229920000159 gelatin Polymers 0.000 description 9
- 239000008273 gelatin Substances 0.000 description 9
- 235000019322 gelatine Nutrition 0.000 description 9
- 235000011852 gelatine desserts Nutrition 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 7
- 230000003595 spectral effect Effects 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 6
- 230000001235 sensitizing effect Effects 0.000 description 6
- LJCWONGJFPCTTL-UHFFFAOYSA-N 4-hydroxyphenylglycine Chemical compound OC(=O)C(N)C1=CC=C(O)C=C1 LJCWONGJFPCTTL-UHFFFAOYSA-N 0.000 description 5
- 230000009102 absorption Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 5
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical group [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 4
- 229910021612 Silver iodide Inorganic materials 0.000 description 4
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 4
- 229940045105 silver iodide Drugs 0.000 description 4
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 4
- LUMLZKVIXLWTCI-NSCUHMNNSA-N (e)-2,3-dichloro-4-oxobut-2-enoic acid Chemical compound OC(=O)C(\Cl)=C(/Cl)C=O LUMLZKVIXLWTCI-NSCUHMNNSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- CODNYICXDISAEA-UHFFFAOYSA-N bromine monochloride Chemical compound BrCl CODNYICXDISAEA-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- ZAKLKBFCSHJIRI-UHFFFAOYSA-N mucochloric acid Natural products OC1OC(=O)C(Cl)=C1Cl ZAKLKBFCSHJIRI-UHFFFAOYSA-N 0.000 description 3
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229930182490 saponin Natural products 0.000 description 3
- 150000007949 saponins Chemical class 0.000 description 3
- 239000001043 yellow dye Substances 0.000 description 3
- CYXJEHCKVOQFOV-UHFFFAOYSA-N (4-amino-2-methylphenyl) hydrogen sulfate Chemical compound CC1=CC(N)=CC=C1OS(O)(=O)=O CYXJEHCKVOQFOV-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- 238000007362 Burton trifluoromethylation reaction Methods 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- SJOOOZPMQAWAOP-UHFFFAOYSA-N [Ag].BrCl Chemical compound [Ag].BrCl SJOOOZPMQAWAOP-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229940101006 anhydrous sodium sulfite Drugs 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 2
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QVLXDGDLLZYJAM-UHFFFAOYSA-N 2,5-dioctylbenzene-1,4-diol Chemical compound CCCCCCCCC1=CC(O)=C(CCCCCCCC)C=C1O QVLXDGDLLZYJAM-UHFFFAOYSA-N 0.000 description 1
- SGYIRNXZLWJMCR-UHFFFAOYSA-M 3-methyl-1,3-benzothiazol-3-ium;iodide Chemical compound [I-].C1=CC=C2[N+](C)=CSC2=C1 SGYIRNXZLWJMCR-UHFFFAOYSA-M 0.000 description 1
- 101710134784 Agnoprotein Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- MQRJBSHKWOFOGF-UHFFFAOYSA-L disodium;carbonate;hydrate Chemical compound O.[Na+].[Na+].[O-]C([O-])=O MQRJBSHKWOFOGF-UHFFFAOYSA-L 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RMHJJUOPOWPRBP-UHFFFAOYSA-N naphthalene-1-carboxamide Chemical compound C1=CC=C2C(C(=O)N)=CC=CC2=C1 RMHJJUOPOWPRBP-UHFFFAOYSA-N 0.000 description 1
- PBRFBWDSQWDLQR-UHFFFAOYSA-L potassium sodium bromide hydroxide Chemical compound [OH-].[Na+].[Br-].[K+] PBRFBWDSQWDLQR-UHFFFAOYSA-L 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
- G03C1/102—Organic substances dyes other than methine dyes
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/3022—Materials with specific emulsion characteristics, e.g. thickness of the layers, silver content, shape of AgX grains
Definitions
- B is heated to 70 C., and A, cold, added to B with constant shaking, digested for 20 minutes at 50 C., and
- Example 1 --Red-sensitive emulsion containing red absorber adsorbed to internal latent image emulsion
- a mixture preheated to 40 C., of 616.0 g. of an internal latent image emulsion prepared by the method of Davey and .Knott above, containing per mole of silver 41.0 g. of a cyan dispersion comprising 3.6 g. of l-hydroxy-2-[-(2,4-diamylphenoxy)-n-butyl] naphthamide, 0.45 g. of 2-hexadecyl-S-methylhydroquinone, 8.1 g. of di-n-butyl phthalate, 24.6 g.
- a multilayer photographic element comprising 7 a support having on one side thereof three silver halide emulsion layers separately sensitive to the blue, green and red spectral regions, and each containing non-diffusing color-forming compounds capable of coupling with the oxidation product of a primary aromatic amino silver halide developing agent to form dyes, and in at least one layer on said side of the support an internal latent image silver halide emulsion, the silver halide grains of which are such as to cause a test portion of said latter emulsion upon exposure to a light intensity scale for a fixed time between 1 and 1 second and development for ⁇ minutes at 20 C. in the following internal type developer:
- p-Hydroxyphenylglycine l0 Sodium carbonate 100 Water to 1 liter to which is adsorbed a dye absorbing a major amount of visible light to which one of said een-sensitive and red-' sensitive emulsion layers is sensitive and a minor amount of blue light.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE561521D BE561521A (en, 2012) | 1956-10-12 | ||
| US615546A US2947628A (en) | 1956-10-12 | 1956-10-12 | Multilayer print film having incorporated coloring material |
| DEE14357A DE1027511B (de) | 1956-10-12 | 1957-07-03 | Farbenphotographisches Mehrschichtenmaterial |
| FR1212029D FR1212029A (fr) | 1956-10-12 | 1957-10-10 | Produit photographique à plusieurs couches d'émulsion |
| GB31955/57A GB878514A (en) | 1956-10-12 | 1957-10-14 | Improvements in colour photographic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US615546A US2947628A (en) | 1956-10-12 | 1956-10-12 | Multilayer print film having incorporated coloring material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2947628A true US2947628A (en) | 1960-08-02 |
Family
ID=24465855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US615546A Expired - Lifetime US2947628A (en) | 1956-10-12 | 1956-10-12 | Multilayer print film having incorporated coloring material |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2947628A (en, 2012) |
| BE (1) | BE561521A (en, 2012) |
| DE (1) | DE1027511B (en, 2012) |
| FR (1) | FR1212029A (en, 2012) |
| GB (1) | GB878514A (en, 2012) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3253921A (en) * | 1961-10-10 | 1966-05-31 | Eastman Kodak Co | Novel photographic elements protected against ultraviolet radiation |
| US3402046A (en) * | 1963-09-23 | 1968-09-17 | Eastman Kodak Co | Multilayer color photographic elements |
| US3404002A (en) * | 1963-06-27 | 1968-10-01 | Eastman Kodak Co | Interimage characteristics of silver halide dye developer image transfer systems |
| US3409433A (en) * | 1963-07-15 | 1968-11-05 | Agfa Ag | Photographic materials containing filter dyes |
| US3480434A (en) * | 1965-11-26 | 1969-11-25 | Eastman Kodak Co | Sensitizer for blue-sensitive emulsions |
| US3622318A (en) * | 1970-03-20 | 1971-11-23 | Eastman Kodak Co | Photographic materials and processes |
| US4129446A (en) * | 1976-05-21 | 1978-12-12 | Agfa-Gevaert Aktiengesellschaft | Color photographic recording material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1879806A (en) * | 1931-02-14 | 1932-09-27 | William V D Kelley | Photographic film |
| US2456956A (en) * | 1942-02-09 | 1948-12-21 | Eastman Kodak Co | Photographic processes and lightsensitive elements therefor |
| US2456954A (en) * | 1947-08-01 | 1948-12-21 | Eastman Kodak Co | Photographic reversal processes |
-
0
- BE BE561521D patent/BE561521A/xx unknown
-
1956
- 1956-10-12 US US615546A patent/US2947628A/en not_active Expired - Lifetime
-
1957
- 1957-07-03 DE DEE14357A patent/DE1027511B/de active Pending
- 1957-10-10 FR FR1212029D patent/FR1212029A/fr not_active Expired
- 1957-10-14 GB GB31955/57A patent/GB878514A/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1879806A (en) * | 1931-02-14 | 1932-09-27 | William V D Kelley | Photographic film |
| US2456956A (en) * | 1942-02-09 | 1948-12-21 | Eastman Kodak Co | Photographic processes and lightsensitive elements therefor |
| US2456954A (en) * | 1947-08-01 | 1948-12-21 | Eastman Kodak Co | Photographic reversal processes |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3253921A (en) * | 1961-10-10 | 1966-05-31 | Eastman Kodak Co | Novel photographic elements protected against ultraviolet radiation |
| US3404002A (en) * | 1963-06-27 | 1968-10-01 | Eastman Kodak Co | Interimage characteristics of silver halide dye developer image transfer systems |
| US3409433A (en) * | 1963-07-15 | 1968-11-05 | Agfa Ag | Photographic materials containing filter dyes |
| US3402046A (en) * | 1963-09-23 | 1968-09-17 | Eastman Kodak Co | Multilayer color photographic elements |
| US3480434A (en) * | 1965-11-26 | 1969-11-25 | Eastman Kodak Co | Sensitizer for blue-sensitive emulsions |
| US3622318A (en) * | 1970-03-20 | 1971-11-23 | Eastman Kodak Co | Photographic materials and processes |
| US4129446A (en) * | 1976-05-21 | 1978-12-12 | Agfa-Gevaert Aktiengesellschaft | Color photographic recording material |
Also Published As
| Publication number | Publication date |
|---|---|
| GB878514A (en) | 1961-10-04 |
| DE1027511B (de) | 1958-04-03 |
| BE561521A (en, 2012) | |
| FR1212029A (fr) | 1960-03-21 |
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