IL31548A - Method and apparatus for extracting heat from articles with an ebullient liquid freezant - Google Patents
Method and apparatus for extracting heat from articles with an ebullient liquid freezantInfo
- Publication number
- IL31548A IL31548A IL31548A IL3154869A IL31548A IL 31548 A IL31548 A IL 31548A IL 31548 A IL31548 A IL 31548A IL 3154869 A IL3154869 A IL 3154869A IL 31548 A IL31548 A IL 31548A
- Authority
- IL
- Israel
- Prior art keywords
- freezant
- heat extraction
- articles
- vapor
- extraction zone
- Prior art date
Links
- 239000007788 liquid Substances 0.000 title claims description 214
- 238000000034 method Methods 0.000 title claims description 75
- 238000000605 extraction Methods 0.000 claims description 208
- 238000009835 boiling Methods 0.000 claims description 57
- 238000004891 communication Methods 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 239000007787 solid Substances 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 14
- 150000005826 halohydrocarbons Chemical class 0.000 claims description 10
- 235000021055 solid food Nutrition 0.000 claims description 8
- 239000004338 Dichlorodifluoromethane Substances 0.000 claims description 7
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 claims description 7
- 235000019404 dichlorodifluoromethane Nutrition 0.000 claims description 7
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 claims description 5
- 229940051271 1,1-difluoroethane Drugs 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 5
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 claims description 4
- 235000013305 food Nutrition 0.000 description 169
- 238000007710 freezing Methods 0.000 description 103
- 230000008014 freezing Effects 0.000 description 103
- 239000003570 air Substances 0.000 description 79
- 239000002245 particle Substances 0.000 description 55
- 230000008569 process Effects 0.000 description 38
- 239000007789 gas Substances 0.000 description 35
- 230000015572 biosynthetic process Effects 0.000 description 17
- 239000000203 mixture Substances 0.000 description 15
- 235000013611 frozen food Nutrition 0.000 description 14
- 238000003860 storage Methods 0.000 description 14
- 230000001965 increasing effect Effects 0.000 description 11
- 238000005192 partition Methods 0.000 description 11
- 238000010926 purge Methods 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 10
- 150000004677 hydrates Chemical class 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 239000012080 ambient air Substances 0.000 description 6
- 229940042935 dichlorodifluoromethane Drugs 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 235000014102 seafood Nutrition 0.000 description 5
- 235000011299 Brassica oleracea var botrytis Nutrition 0.000 description 4
- 240000003259 Brassica oleracea var. botrytis Species 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 244000045232 Canavalia ensiformis Species 0.000 description 3
- 244000000626 Daucus carota Species 0.000 description 3
- 235000002767 Daucus carota Nutrition 0.000 description 3
- 241000238557 Decapoda Species 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 240000009088 Fragaria x ananassa Species 0.000 description 3
- 241000287828 Gallus gallus Species 0.000 description 3
- 244000070406 Malus silvestris Species 0.000 description 3
- 235000010617 Phaseolus lunatus Nutrition 0.000 description 3
- 240000004713 Pisum sativum Species 0.000 description 3
- 235000010582 Pisum sativum Nutrition 0.000 description 3
- 240000005809 Prunus persica Species 0.000 description 3
- 235000006040 Prunus persica var persica Nutrition 0.000 description 3
- 240000008042 Zea mays Species 0.000 description 3
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 235000013330 chicken meat Nutrition 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 235000005822 corn Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 244000013123 dwarf bean Species 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 238000011067 equilibration Methods 0.000 description 3
- 235000019688 fish Nutrition 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 235000012055 fruits and vegetables Nutrition 0.000 description 3
- 235000021331 green beans Nutrition 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 235000021012 strawberries Nutrition 0.000 description 3
- -1 that is Substances 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 235000017647 Brassica oleracea var italica Nutrition 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 244000018633 Prunus armeniaca Species 0.000 description 2
- 235000009827 Prunus armeniaca Nutrition 0.000 description 2
- 244000061456 Solanum tuberosum Species 0.000 description 2
- 235000002595 Solanum tuberosum Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 235000021016 apples Nutrition 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 235000015278 beef Nutrition 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 235000021056 liquid food Nutrition 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 235000014594 pastries Nutrition 0.000 description 2
- 235000021018 plums Nutrition 0.000 description 2
- 235000012015 potatoes Nutrition 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 235000014347 soups Nutrition 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- DDMOUSALMHHKOS-UHFFFAOYSA-N 1,2-dichloro-1,1,2,2-tetrafluoroethane Chemical compound FC(F)(Cl)C(F)(F)Cl DDMOUSALMHHKOS-UHFFFAOYSA-N 0.000 description 1
- RFCAUADVODFSLZ-UHFFFAOYSA-N 1-Chloro-1,1,2,2,2-pentafluoroethane Chemical compound FC(F)(F)C(F)(F)Cl RFCAUADVODFSLZ-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 244000099147 Ananas comosus Species 0.000 description 1
- 235000007119 Ananas comosus Nutrition 0.000 description 1
- 240000007087 Apium graveolens Species 0.000 description 1
- 235000015849 Apium graveolens Dulce Group Nutrition 0.000 description 1
- 235000010591 Appio Nutrition 0.000 description 1
- 244000003416 Asparagus officinalis Species 0.000 description 1
- 235000005340 Asparagus officinalis Nutrition 0.000 description 1
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 241000167854 Bourreria succulenta Species 0.000 description 1
- 235000004221 Brassica oleracea var gemmifera Nutrition 0.000 description 1
- 244000308368 Brassica oleracea var. gemmifera Species 0.000 description 1
- 235000008534 Capsicum annuum var annuum Nutrition 0.000 description 1
- 240000008384 Capsicum annuum var. annuum Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000004340 Chloropentafluoroethane Substances 0.000 description 1
- 240000000560 Citrus x paradisi Species 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000009847 Cucumis melo var cantalupensis Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000019687 Lamb Nutrition 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 239000004341 Octafluorocyclobutane Substances 0.000 description 1
- 241000266501 Ormosia ormondii Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000237503 Pectinidae Species 0.000 description 1
- 235000008673 Persea americana Nutrition 0.000 description 1
- 244000025272 Persea americana Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 244000088415 Raphanus sativus Species 0.000 description 1
- 235000006140 Raphanus sativus var sativus Nutrition 0.000 description 1
- 240000007651 Rubus glaucus Species 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 244000061458 Solanum melongena Species 0.000 description 1
- 235000002597 Solanum melongena Nutrition 0.000 description 1
- 235000003095 Vaccinium corymbosum Nutrition 0.000 description 1
- 240000000851 Vaccinium corymbosum Species 0.000 description 1
- 235000017537 Vaccinium myrtillus Nutrition 0.000 description 1
- 241000219094 Vitaceae Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000021028 berry Nutrition 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 235000021014 blueberries Nutrition 0.000 description 1
- 235000012813 breadcrumbs Nutrition 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 235000010633 broth Nutrition 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019693 cherries Nutrition 0.000 description 1
- 235000019406 chloropentafluoroethane Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- HVZOXKBJWSAXLM-UHFFFAOYSA-N dichloro(difluoro)methane;hydrate Chemical compound O.FC(F)(Cl)Cl HVZOXKBJWSAXLM-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 235000015168 fish fingers Nutrition 0.000 description 1
- 235000013332 fish product Nutrition 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 235000021021 grapes Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical group 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 235000013575 mashed potatoes Nutrition 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- STEPQTYSZVCJPV-UHFFFAOYSA-N metazachlor Chemical compound CC1=CC=CC(C)=C1N(C(=O)CCl)CN1N=CC=C1 STEPQTYSZVCJPV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000019407 octafluorocyclobutane Nutrition 0.000 description 1
- BCCOBQSFUDVTJQ-UHFFFAOYSA-N octafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(F)C1(F)F BCCOBQSFUDVTJQ-UHFFFAOYSA-N 0.000 description 1
- 235000015205 orange juice Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 235000021013 raspberries Nutrition 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 235000020637 scallop Nutrition 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000021057 semi-liquid food Nutrition 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/005—Other direct-contact heat-exchange apparatus one heat-exchange medium being a solid
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- A23B2/00—Preservation of foods or foodstuffs, in general
- A23B2/80—Freezing; Subsequent thawing; Cooling
- A23B2/85—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals
- A23B2/88—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals with direct contact between the food and the chemical, e.g. liquid N2 at cryogenic temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D9/00—Devices not associated with refrigerating machinery and not covered by groups F25D1/00 - F25D7/00; Combinations of devices covered by two or more of the groups F25D1/00 - F25D7/00
- F25D9/005—Devices not associated with refrigerating machinery and not covered by groups F25D1/00 - F25D7/00; Combinations of devices covered by two or more of the groups F25D1/00 - F25D7/00 using fluorinated halogenous hydrocarbons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Extraction Or Liquid Replacement (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70339368A | 1968-02-06 | 1968-02-06 | |
| US72525768A | 1968-04-19 | 1968-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL31548A0 IL31548A0 (en) | 1969-04-30 |
| IL31548A true IL31548A (en) | 1972-04-27 |
Family
ID=27107126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL31548A IL31548A (en) | 1968-02-06 | 1969-02-04 | Method and apparatus for extracting heat from articles with an ebullient liquid freezant |
Country Status (12)
| Country | Link |
|---|---|
| BG (1) | BG17017A3 (ro) |
| CH (1) | CH532761A (ro) |
| DE (1) | DE1905413C3 (ro) |
| DK (1) | DK132684C (ro) |
| ES (1) | ES363329A1 (ro) |
| FR (1) | FR2001418A1 (ro) |
| IL (1) | IL31548A (ro) |
| LU (1) | LU57919A1 (ro) |
| NL (1) | NL145039B (ro) |
| NO (1) | NO126704B (ro) |
| RO (1) | RO55573A (ro) |
| SE (1) | SE350593B (ro) |
-
1969
- 1969-02-04 IL IL31548A patent/IL31548A/en unknown
- 1969-02-04 LU LU57919D patent/LU57919A1/xx unknown
- 1969-02-04 DE DE1905413A patent/DE1905413C3/de not_active Expired
- 1969-02-05 CH CH178369A patent/CH532761A/de not_active IP Right Cessation
- 1969-02-05 NO NO00427/69A patent/NO126704B/no unknown
- 1969-02-05 BG BG011586A patent/BG17017A3/xx unknown
- 1969-02-05 DK DK61469*#A patent/DK132684C/da active
- 1969-02-05 ES ES363329A patent/ES363329A1/es not_active Expired
- 1969-02-05 SE SE01523/69A patent/SE350593B/xx unknown
- 1969-02-06 FR FR6902689A patent/FR2001418A1/fr not_active Withdrawn
- 1969-02-06 NL NL696901909A patent/NL145039B/xx unknown
- 1969-02-06 RO RO196959001A patent/RO55573A/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1905413A1 (de) | 1969-10-16 |
| RO55573A (ro) | 1974-01-03 |
| DK132684C (da) | 1976-06-28 |
| IL31548A0 (en) | 1969-04-30 |
| ES363329A1 (es) | 1971-02-16 |
| NO126704B (ro) | 1973-03-12 |
| SE350593B (ro) | 1972-10-30 |
| LU57919A1 (ro) | 1969-05-21 |
| DK132684B (da) | 1976-01-26 |
| NL6901909A (ro) | 1969-08-08 |
| CH532761A (de) | 1973-01-15 |
| NL145039B (nl) | 1975-02-17 |
| FR2001418A1 (ro) | 1969-09-26 |
| DE1905413C3 (de) | 1975-06-05 |
| BG17017A3 (bg) | 1973-04-25 |
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