DE1642370A1 - Frostschutzmittel - Google Patents
FrostschutzmittelInfo
- Publication number
- DE1642370A1 DE1642370A1 DE19661642370 DE1642370A DE1642370A1 DE 1642370 A1 DE1642370 A1 DE 1642370A1 DE 19661642370 DE19661642370 DE 19661642370 DE 1642370 A DE1642370 A DE 1642370A DE 1642370 A1 DE1642370 A1 DE 1642370A1
- Authority
- DE
- Germany
- Prior art keywords
- alkali metal
- antifreeze
- phosphate
- sodium
- tetraborate
- 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.)
- Pending
Links
- 230000002528 anti-freeze Effects 0.000 title claims description 32
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 44
- -1 alkali metal tetraborate Chemical class 0.000 claims description 32
- 229910052783 alkali metal Inorganic materials 0.000 claims description 30
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 30
- 239000002518 antifoaming agent Substances 0.000 claims description 27
- 229910000318 alkali metal phosphate Inorganic materials 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 150000001340 alkali metals Chemical group 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 15
- 235000011009 potassium phosphates Nutrition 0.000 claims description 15
- 239000007798 antifreeze agent Substances 0.000 claims description 13
- 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 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 11
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 claims description 3
- FZQSLXQPHPOTHG-UHFFFAOYSA-N [K+].[K+].O1B([O-])OB2OB([O-])OB1O2 Chemical compound [K+].[K+].O1B([O-])OB2OB([O-])OB1O2 FZQSLXQPHPOTHG-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 125000000623 heterocyclic group Chemical group 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 239000011814 protection agent Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 2
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 125000004434 sulfur atom Chemical group 0.000 claims description 2
- 150000002391 heterocyclic compounds Chemical class 0.000 claims 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims 1
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 229910000679 solder Inorganic materials 0.000 description 8
- 235000010339 sodium tetraborate Nutrition 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 6
- 229910021538 borax Inorganic materials 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 6
- 239000004328 sodium tetraborate Substances 0.000 description 6
- VLDHWMAJBNWALQ-UHFFFAOYSA-M sodium;1,3-benzothiazol-3-ide-2-thione Chemical compound [Na+].C1=CC=C2SC([S-])=NC2=C1 VLDHWMAJBNWALQ-UHFFFAOYSA-M 0.000 description 6
- 229910001369 Brass Inorganic materials 0.000 description 5
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 5
- 239000010951 brass Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 150000004691 decahydrates Chemical class 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 238000011065 in-situ storage Methods 0.000 description 5
- 150000004686 pentahydrates Chemical class 0.000 description 5
- 235000021317 phosphate Nutrition 0.000 description 5
- 230000004580 weight loss Effects 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 4
- 239000012964 benzotriazole Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- SHNJHLWLAGUBOV-UHFFFAOYSA-N sodium;oxido(oxo)borane;octahydrate Chemical compound O.O.O.O.O.O.O.O.[Na+].[O-]B=O SHNJHLWLAGUBOV-UHFFFAOYSA-N 0.000 description 3
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000004689 octahydrates Chemical class 0.000 description 2
- 239000010695 polyglycol Substances 0.000 description 2
- 229920000151 polyglycol Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- JVUYWILPYBCNNG-UHFFFAOYSA-N potassium;oxido(oxo)borane Chemical compound [K+].[O-]B=O JVUYWILPYBCNNG-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- NCPXQVVMIXIKTN-UHFFFAOYSA-N trisodium;phosphite Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])[O-] NCPXQVVMIXIKTN-UHFFFAOYSA-N 0.000 description 2
- FLFWJIBUZQARMD-UHFFFAOYSA-N 2-mercapto-1,3-benzoxazole Chemical compound C1=CC=C2OC(S)=NC2=C1 FLFWJIBUZQARMD-UHFFFAOYSA-N 0.000 description 1
- GDTSJMKGXGJFGQ-UHFFFAOYSA-N 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound O1B([O-])OB2OB([O-])OB1O2 GDTSJMKGXGJFGQ-UHFFFAOYSA-N 0.000 description 1
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- RWXZXCZBMQPOBF-UHFFFAOYSA-N 5-methyl-1H-benzimidazole Chemical compound CC1=CC=C2N=CNC2=C1 RWXZXCZBMQPOBF-UHFFFAOYSA-N 0.000 description 1
- LRUDIIUSNGCQKF-UHFFFAOYSA-N 5-methyl-1H-benzotriazole Chemical compound C1=C(C)C=CC2=NNN=C21 LRUDIIUSNGCQKF-UHFFFAOYSA-N 0.000 description 1
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004435 Oxo alcohol Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- DQGUTKSFKPBZRC-UHFFFAOYSA-K [K+].[K+].[K+].OCCO.[O-]P([O-])([O-])=O Chemical compound [K+].[K+].[K+].OCCO.[O-]P([O-])([O-])=O DQGUTKSFKPBZRC-UHFFFAOYSA-K 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- CDMADVZSLOHIFP-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 CDMADVZSLOHIFP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- KEXXDMPEUZTTIS-UHFFFAOYSA-N ethane-1,2-diol;phosphoric acid Chemical compound OCCO.OP(O)(O)=O KEXXDMPEUZTTIS-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Thiazole And Isothizaole Compounds (AREA)
- Lubricants (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2256865A GB1138062A (en) | 1965-05-27 | 1965-05-27 | Improvements in or relating to antifreeze |
| GB2327865 | 1965-06-01 | ||
| GB2350565A GB1145997A (en) | 1965-05-27 | 1965-06-02 | Improvements in or relating to antifreeze |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1642370A1 true DE1642370A1 (de) | 1971-05-06 |
Family
ID=27258123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19661642370 Pending DE1642370A1 (de) | 1965-05-27 | 1966-05-25 | Frostschutzmittel |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE681582A (enrdf_load_stackoverflow) |
| CH (1) | CH487233A (enrdf_load_stackoverflow) |
| DE (1) | DE1642370A1 (enrdf_load_stackoverflow) |
| FI (2) | FI46514C (enrdf_load_stackoverflow) |
| FR (1) | FR1480971A (enrdf_load_stackoverflow) |
| GB (2) | GB1138062A (enrdf_load_stackoverflow) |
| NL (1) | NL6607190A (enrdf_load_stackoverflow) |
| SE (1) | SE333575B (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1083335A (en) * | 1976-05-10 | 1980-08-12 | Chemed Corporation | Composition and method of inhibiting corrosion |
| DE2914946A1 (de) * | 1978-05-25 | 1979-11-29 | Texaco Development Corp | Frostschutzmittel |
-
0
- FR FR1480971D patent/FR1480971A/fr not_active Expired
-
1965
- 1965-05-27 GB GB2256865A patent/GB1138062A/en not_active Expired
- 1965-06-02 GB GB2350565A patent/GB1145997A/en not_active Expired
-
1966
- 1966-05-25 DE DE19661642370 patent/DE1642370A1/de active Pending
- 1966-05-25 SE SE716166A patent/SE333575B/xx unknown
- 1966-05-25 NL NL6607190A patent/NL6607190A/xx unknown
- 1966-05-25 CH CH757566A patent/CH487233A/de not_active IP Right Cessation
- 1966-05-25 FI FI137566A patent/FI46514C/fi active
- 1966-05-25 BE BE681582D patent/BE681582A/xx unknown
-
1972
- 1972-09-22 FI FI262372A patent/FI48358C/fi active
Also Published As
| Publication number | Publication date |
|---|---|
| NL6607190A (enrdf_load_stackoverflow) | 1966-11-28 |
| FR1480971A (enrdf_load_stackoverflow) | 1967-08-09 |
| BE681582A (enrdf_load_stackoverflow) | 1966-11-25 |
| FI46514B (fi) | 1973-01-02 |
| FI46514C (fi) | 1973-04-10 |
| GB1138062A (en) | 1968-12-27 |
| GB1145997A (en) | 1969-03-19 |
| SE333575B (enrdf_load_stackoverflow) | 1971-03-22 |
| FI48358C (fi) | 1974-09-10 |
| FI48358B (enrdf_load_stackoverflow) | 1974-05-31 |
| CH487233A (de) | 1970-03-15 |
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