CH521156A - Verfahren zur Behandlung von endlosen Bahnen aus faserhaltigem Material zwecks Herstellung eines Filterstrangs - Google Patents
Verfahren zur Behandlung von endlosen Bahnen aus faserhaltigem Material zwecks Herstellung eines FilterstrangsInfo
- Publication number
- CH521156A CH521156A CH439570A CH439570A CH521156A CH 521156 A CH521156 A CH 521156A CH 439570 A CH439570 A CH 439570A CH 439570 A CH439570 A CH 439570A CH 521156 A CH521156 A CH 521156A
- Authority
- CH
- Switzerland
- Prior art keywords
- cellulose
- impregnating agent
- group
- belong
- substances
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 51
- 239000002657 fibrous material Substances 0.000 title claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 65
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000005470 impregnation Methods 0.000 claims description 29
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- 239000000126 substance Substances 0.000 claims description 25
- 229920002678 cellulose Polymers 0.000 claims description 22
- 239000001913 cellulose Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 22
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 16
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims description 16
- 235000019441 ethanol Nutrition 0.000 claims description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 150000001298 alcohols Chemical class 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 239000000020 Nitrocellulose Substances 0.000 claims description 7
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical class [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 7
- 150000002576 ketones Chemical class 0.000 claims description 7
- 229920001220 nitrocellulos Polymers 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 150000007513 acids Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- 150000002170 ethers Chemical class 0.000 claims description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- 235000011054 acetic acid Nutrition 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 3
- 235000019260 propionic acid Nutrition 0.000 claims description 3
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 229960003750 ethyl chloride Drugs 0.000 claims description 2
- 150000008282 halocarbons Chemical class 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- -1 waxes Chemical class 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 150000003738 xylenes Chemical class 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 6
- 239000000243 solution Substances 0.000 claims 5
- 238000010790 dilution Methods 0.000 claims 4
- 239000012895 dilution Substances 0.000 claims 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims 3
- 229920002301 cellulose acetate Polymers 0.000 claims 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 2
- 238000001704 evaporation Methods 0.000 claims 2
- 150000007524 organic acids Chemical class 0.000 claims 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical class CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims 1
- 238000009835 boiling Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 235000011187 glycerol Nutrition 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 150000007522 mineralic acids Chemical class 0.000 claims 1
- 235000005985 organic acids Nutrition 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 150000005846 sugar alcohols Polymers 0.000 claims 1
- 239000001993 wax Substances 0.000 claims 1
- 235000019504 cigarettes Nutrition 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000008961 swelling Effects 0.000 description 9
- 238000005242 forging Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 230000006399 behavior Effects 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229960002715 nicotine Drugs 0.000 description 2
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- FWVCSXWHVOOTFJ-UHFFFAOYSA-N 1-(2-chloroethylsulfanyl)-2-[2-(2-chloroethylsulfanyl)ethoxy]ethane Chemical compound ClCCSCCOCCSCCCl FWVCSXWHVOOTFJ-UHFFFAOYSA-N 0.000 description 1
- KSSFGJUSMXZBDD-UHFFFAOYSA-N 3-oxo-4-pentenoic acid Chemical compound OC(=O)CC(=O)C=C KSSFGJUSMXZBDD-UHFFFAOYSA-N 0.000 description 1
- HTRXGEPDTFSKLI-UHFFFAOYSA-N butanoic acid;ethyl acetate Chemical compound CCCC(O)=O.CCOC(C)=O HTRXGEPDTFSKLI-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000003613 toluenes Chemical class 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1007—Running or continuous length work
- Y10T156/1016—Transverse corrugating
Landscapes
- Paper (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH439570A CH521156A (de) | 1969-04-30 | 1970-03-24 | Verfahren zur Behandlung von endlosen Bahnen aus faserhaltigem Material zwecks Herstellung eines Filterstrangs |
| IL34341A IL34341A (en) | 1969-04-30 | 1970-04-17 | A method of treating strips of fibrous material to make a filter rope |
| ES378870A ES378870A1 (es) | 1969-04-30 | 1970-04-21 | Un procedimiento para el tratamiento de bandas sin fin de material fibroso, en especial de papel. |
| SE05594/70A SE359726B (enrdf_load_stackoverflow) | 1969-04-30 | 1970-04-22 | |
| AT367970A AT309200B (de) | 1970-03-24 | 1970-04-22 | Verfahren zur Behandlung von endlosen Bahnen aus faserhaltigem Material |
| GB09618/70A GB1276933A (en) | 1969-04-30 | 1970-04-23 | Method of making filtering material for tobacco products |
| DE2020115A DE2020115B2 (de) | 1969-04-30 | 1970-04-24 | Verfahren zur Herstellung von Filtermaterial für Rauchwaren |
| NL7006199A NL7006199A (enrdf_load_stackoverflow) | 1969-04-30 | 1970-04-28 | |
| US32569A US3621764A (en) | 1969-04-30 | 1970-04-28 | Method for making filtering material for tobacco products |
| FI701188A FI49471C (fi) | 1969-04-30 | 1970-04-28 | Menetelmä ja laite suodatinmateriaalin valmistamiseksi savukkeita vart en. |
| JP45036754A JPS4924237B1 (enrdf_load_stackoverflow) | 1969-04-30 | 1970-04-28 | |
| FR7015712A FR2041222A1 (enrdf_load_stackoverflow) | 1969-04-30 | 1970-04-29 | |
| NO01631/70A NO128303B (enrdf_load_stackoverflow) | 1969-04-30 | 1970-04-29 | |
| SU1434671A SU458964A3 (ru) | 1969-04-30 | 1970-04-29 | Способ изготовлени фильтров дл табачных изделий |
| BE749738D BE749738A (fr) | 1969-04-30 | 1970-04-29 | Procede et dispositifs pour la fabrication de matieres a filtres de cigarettes, cigares, etc. |
| RO197063242A RO56263A (enrdf_load_stackoverflow) | 1969-04-30 | 1970-04-30 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH659069A CH494584A (de) | 1969-04-30 | 1969-04-30 | Verfahren zur Behandlung von endlosen Bahnen aus faserhaltigem Material, zwecks Herstellung eines Filterstranges |
| CH439570A CH521156A (de) | 1969-04-30 | 1970-03-24 | Verfahren zur Behandlung von endlosen Bahnen aus faserhaltigem Material zwecks Herstellung eines Filterstrangs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH521156A true CH521156A (de) | 1972-04-15 |
Family
ID=25695345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH439570A CH521156A (de) | 1969-04-30 | 1970-03-24 | Verfahren zur Behandlung von endlosen Bahnen aus faserhaltigem Material zwecks Herstellung eines Filterstrangs |
Country Status (15)
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3930935A (en) * | 1971-05-13 | 1976-01-06 | Celfil Company Establishment | Apparatus for making webs of filtering material for tobacco product filters, particularly cigarette filters |
| US3831501A (en) * | 1973-07-16 | 1974-08-27 | Eastman Kodak Co | Sheet plicating device |
| US5643397A (en) * | 1988-05-13 | 1997-07-01 | Minnesota Mining And Manufacturing Company | Equipment for forming a sheet of loop material |
| US5254194A (en) * | 1988-05-13 | 1993-10-19 | Minnesota Mining And Manufacturing Company | Coated abrasive sheet material with loop material for attachment incorporated therein |
| US5256231A (en) * | 1988-05-13 | 1993-10-26 | Minnesota Mining And Manufacturing Company | Method for making a sheet of loop material |
| US5616394A (en) * | 1988-05-13 | 1997-04-01 | Minnesota Mining And Manufacturing Company | Sheet of loop material, and garments having such loop material incorporated therein |
| CA2213449A1 (en) * | 1995-03-06 | 1996-09-12 | Weyerhaeuser Company | Fibrous web having improved strength and method of making the same |
| US20140364290A1 (en) * | 2011-12-30 | 2014-12-11 | Philip Morris Products S.A. | Apparatus and method for supplying a continuous web of crimped sheet material |
| RU2674746C2 (ru) * | 2013-09-02 | 2018-12-12 | Филип Моррис Продактс С.А. | Способ и устройство для изготовления переменно гофрированного листового материала |
| CN106690412B (zh) * | 2017-03-06 | 2023-05-26 | 云南芯韵科技开发有限公司 | 一种含纸质线的功能化滤棒及其制备方法 |
| KR102639937B1 (ko) * | 2017-04-18 | 2024-02-27 | 필립모리스 프로덕츠 에스.에이. | 시트 같은 담배 재료의 제조를 위한 장치 및 방법 |
| WO2018215467A1 (en) * | 2017-05-22 | 2018-11-29 | Philip Morris Products S.A. | A method and an apparatus for manufacturing a crimped sheet of material |
| WO2019158333A1 (en) | 2018-02-14 | 2019-08-22 | Philip Morris Products S.A. | Apparatus for crimping a sheet of material |
| PL3938171T3 (pl) * | 2019-03-13 | 2025-04-28 | Philip Morris Products S.A. | Sposób i aparatura do wytwarzania pofałdowanej wstęgi |
| PL3915740T3 (pl) * | 2020-05-27 | 2023-05-08 | G.D. S.P.A | Jednostka do cięcia ciągłej wstęgi na równoległe pasy |
-
1970
- 1970-03-24 CH CH439570A patent/CH521156A/de not_active IP Right Cessation
- 1970-04-17 IL IL34341A patent/IL34341A/en unknown
- 1970-04-21 ES ES378870A patent/ES378870A1/es not_active Expired
- 1970-04-22 SE SE05594/70A patent/SE359726B/xx unknown
- 1970-04-23 GB GB09618/70A patent/GB1276933A/en not_active Expired
- 1970-04-24 DE DE2020115A patent/DE2020115B2/de active Pending
- 1970-04-28 US US32569A patent/US3621764A/en not_active Expired - Lifetime
- 1970-04-28 JP JP45036754A patent/JPS4924237B1/ja active Pending
- 1970-04-28 NL NL7006199A patent/NL7006199A/xx unknown
- 1970-04-28 FI FI701188A patent/FI49471C/fi active
- 1970-04-29 SU SU1434671A patent/SU458964A3/ru active
- 1970-04-29 NO NO01631/70A patent/NO128303B/no unknown
- 1970-04-29 BE BE749738D patent/BE749738A/xx unknown
- 1970-04-29 FR FR7015712A patent/FR2041222A1/fr not_active Withdrawn
- 1970-04-30 RO RO197063242A patent/RO56263A/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI49471B (enrdf_load_stackoverflow) | 1975-04-01 |
| JPS4924237B1 (enrdf_load_stackoverflow) | 1974-06-21 |
| DE2020115B2 (de) | 1975-07-10 |
| DE2020115A1 (de) | 1970-11-12 |
| FR2041222A1 (enrdf_load_stackoverflow) | 1971-01-29 |
| IL34341A (en) | 1973-07-30 |
| SU458964A3 (ru) | 1975-01-30 |
| BE749738A (fr) | 1970-10-01 |
| SE359726B (enrdf_load_stackoverflow) | 1973-09-10 |
| GB1276933A (en) | 1972-06-07 |
| NL7006199A (enrdf_load_stackoverflow) | 1970-11-03 |
| NO128303B (enrdf_load_stackoverflow) | 1973-10-29 |
| ES378870A1 (es) | 1973-01-16 |
| RO56263A (enrdf_load_stackoverflow) | 1974-04-29 |
| FI49471C (fi) | 1975-07-10 |
| IL34341A0 (en) | 1970-06-17 |
| US3621764A (en) | 1971-11-23 |
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