GB1603394A - Organic rubber pressure rolls - Google Patents
Organic rubber pressure rolls Download PDFInfo
- Publication number
- GB1603394A GB1603394A GB23225/78A GB2322578A GB1603394A GB 1603394 A GB1603394 A GB 1603394A GB 23225/78 A GB23225/78 A GB 23225/78A GB 2322578 A GB2322578 A GB 2322578A GB 1603394 A GB1603394 A GB 1603394A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- parts
- pressure roll
- organic
- roll according
- 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
Links
- 229920001971 elastomer Polymers 0.000 title claims description 130
- 239000005060 rubber Substances 0.000 title claims description 128
- 239000010410 layer Substances 0.000 claims description 57
- 239000000463 material Substances 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 25
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 20
- 239000004014 plasticizer Substances 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 18
- 150000003254 radicals Chemical class 0.000 claims description 18
- 229920002943 EPDM rubber Polymers 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 13
- 239000006229 carbon black Substances 0.000 claims description 12
- 239000003999 initiator Substances 0.000 claims description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000004132 cross linking Methods 0.000 claims description 11
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 10
- 239000011787 zinc oxide Substances 0.000 claims description 10
- 239000012190 activator Substances 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 8
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 7
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 6
- 229920005556 chlorobutyl Polymers 0.000 claims description 6
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 6
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 6
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 claims description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 4
- 239000010690 paraffinic oil Substances 0.000 claims description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 238000010525 oxidative degradation reaction Methods 0.000 claims description 3
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims description 2
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 2
- 239000005062 Polybutadiene Substances 0.000 claims description 2
- 150000004982 aromatic amines Chemical class 0.000 claims description 2
- 229920006229 ethylene acrylic elastomer Polymers 0.000 claims description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 2
- 229920003049 isoprene rubber Polymers 0.000 claims description 2
- 150000002989 phenols Chemical class 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- 230000000977 initiatory effect Effects 0.000 claims 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims 1
- 229920005549 butyl rubber Polymers 0.000 claims 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims 1
- 239000004810 polytetrafluoroethylene Substances 0.000 claims 1
- 238000010186 staining Methods 0.000 claims 1
- 229920002379 silicone rubber Polymers 0.000 description 16
- 239000004945 silicone rubber Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 15
- 239000004809 Teflon Substances 0.000 description 12
- 229920006362 Teflon® Polymers 0.000 description 12
- 235000019241 carbon black Nutrition 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 229920002545 silicone oil Polymers 0.000 description 10
- 238000009472 formulation Methods 0.000 description 9
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 9
- 150000002978 peroxides Chemical class 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 238000001723 curing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000013329 compounding Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000012858 resilient material Substances 0.000 description 3
- 238000010058 rubber compounding Methods 0.000 description 3
- RRZIJNVZMJUGTK-UHFFFAOYSA-N 1,1,2-trifluoro-2-(1,2,2-trifluoroethenoxy)ethene Chemical compound FC(F)=C(F)OC(F)=C(F)F RRZIJNVZMJUGTK-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical compound C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241000206607 Porphyra umbilicalis Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 125000005375 organosiloxane group Chemical group 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- FPAZNLSVMWRGQB-UHFFFAOYSA-N 1,2-bis(tert-butylperoxy)-3,4-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=C(OOC(C)(C)C)C(OOC(C)(C)C)=C1C(C)C FPAZNLSVMWRGQB-UHFFFAOYSA-N 0.000 description 1
- GDOBGDUGIFUCJV-UHFFFAOYSA-N 2,2-dimethylbutane;2-methylprop-2-enoic acid Chemical compound CCC(C)(C)C.CC(=C)C(O)=O.CC(=C)C(O)=O.CC(=C)C(O)=O GDOBGDUGIFUCJV-UHFFFAOYSA-N 0.000 description 1
- XOJWAAUYNWGQAU-UHFFFAOYSA-N 4-(2-methylprop-2-enoyloxy)butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCOC(=O)C(C)=C XOJWAAUYNWGQAU-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241001482237 Pica Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000012668 chain scission Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000012772 electrical insulation material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- CDOSHBSSFJOMGT-UHFFFAOYSA-N linalool Chemical compound CC(C)=CCCC(C)(O)C=C CDOSHBSSFJOMGT-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920002589 poly(vinylethylene) polymer Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 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 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000003336 secondary aromatic amines Chemical class 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/206—Structural details or chemical composition of the pressure elements and layers thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/803,095 US4083092A (en) | 1977-06-03 | 1977-06-03 | Sleeved organic rubber pressure rolls |
| US05/803,094 US4149797A (en) | 1977-06-03 | 1977-06-03 | Sleeved organic rubber pressure rolls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1603394A true GB1603394A (en) | 1981-11-25 |
Family
ID=27122541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23225/78A Expired GB1603394A (en) | 1977-06-03 | 1978-05-26 | Organic rubber pressure rolls |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE2824081A1 (enExample) |
| FR (1) | FR2393352A1 (enExample) |
| GB (1) | GB1603394A (enExample) |
| IT (1) | IT1110193B (enExample) |
| NL (1) | NL7806110A (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2123524A (en) * | 1982-07-07 | 1984-02-01 | Xerox Corp | Rollers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3449548A (en) * | 1966-12-30 | 1969-06-10 | Xerox Corp | Fusing device |
| US3988817A (en) * | 1973-12-18 | 1976-11-02 | Xerox Corporation | Pressure roll for dry fuser apparatus |
| US3912901A (en) * | 1974-07-15 | 1975-10-14 | Xerox Corp | Pfa teflon sleeved chow pressure roll |
| US3918397A (en) * | 1974-07-22 | 1975-11-11 | Xerox Corp | Contact fusing apparatus for fixing toner images to a support member |
-
1978
- 1978-05-26 FR FR7815838A patent/FR2393352A1/fr active Granted
- 1978-05-26 GB GB23225/78A patent/GB1603394A/en not_active Expired
- 1978-06-01 DE DE19782824081 patent/DE2824081A1/de active Granted
- 1978-06-02 IT IT24180/78A patent/IT1110193B/it active
- 1978-06-05 NL NL7806110A patent/NL7806110A/xx not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2123524A (en) * | 1982-07-07 | 1984-02-01 | Xerox Corp | Rollers |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7806110A (nl) | 1978-12-05 |
| IT1110193B (it) | 1985-12-23 |
| FR2393352A1 (fr) | 1978-12-29 |
| DE2824081C2 (enExample) | 1988-08-11 |
| IT7824180A0 (it) | 1978-06-02 |
| FR2393352B1 (enExample) | 1981-07-24 |
| DE2824081A1 (de) | 1978-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |