DE1965293A1 - Elektrofotografisches Abbildungsverfahren - Google Patents
Elektrofotografisches AbbildungsverfahrenInfo
- Publication number
- DE1965293A1 DE1965293A1 DE19691965293 DE1965293A DE1965293A1 DE 1965293 A1 DE1965293 A1 DE 1965293A1 DE 19691965293 DE19691965293 DE 19691965293 DE 1965293 A DE1965293 A DE 1965293A DE 1965293 A1 DE1965293 A1 DE 1965293A1
- Authority
- DE
- Germany
- Prior art keywords
- image
- toner
- developer
- development
- image plate
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 103
- 238000003384 imaging method Methods 0.000 title claims description 24
- 230000008569 process Effects 0.000 title description 45
- 238000011161 development Methods 0.000 claims description 73
- 239000002245 particle Substances 0.000 claims description 66
- 239000000463 material Substances 0.000 claims description 24
- 238000012546 transfer Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 1
- 230000005686 electrostatic field Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 82
- 230000000694 effects Effects 0.000 description 38
- 239000000126 substance Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 229910052711 selenium Inorganic materials 0.000 description 8
- 239000011669 selenium Substances 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- -1 polyvinylanthracene Natural products 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001850 reproductive effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- BOCJQSFSGAZAPQ-UHFFFAOYSA-N 1-chloroanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2Cl BOCJQSFSGAZAPQ-UHFFFAOYSA-N 0.000 description 1
- FIISKTXZUZBTRC-UHFFFAOYSA-N 2-phenyl-1,3-benzoxazole Chemical compound C1=CC=CC=C1C1=NC2=CC=CC=C2O1 FIISKTXZUZBTRC-UHFFFAOYSA-N 0.000 description 1
- BXRFQSNOROATLV-UHFFFAOYSA-N 4-nitrobenzaldehyde Chemical compound [O-][N+](=O)C1=CC=C(C=O)C=C1 BXRFQSNOROATLV-UHFFFAOYSA-N 0.000 description 1
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- BKQMNPVDJIHLPD-UHFFFAOYSA-N OS(=O)(=O)[Se]S(O)(=O)=O Chemical compound OS(=O)(=O)[Se]S(O)(=O)=O BKQMNPVDJIHLPD-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical class OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 206010035148 Plague Diseases 0.000 description 1
- 229910000796 S alloy Inorganic materials 0.000 description 1
- 229910020175 SiOH Inorganic materials 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910001215 Te alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920000180 alkyd Polymers 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
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical class [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 239000006194 liquid suspension Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000003346 selenoethers Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
- UQMZPFKLYHOJDL-UHFFFAOYSA-N zinc;cadmium(2+);disulfide Chemical compound [S-2].[S-2].[Zn+2].[Cd+2] UQMZPFKLYHOJDL-UHFFFAOYSA-N 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0801—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer for cascading
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0047—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using electrostatic or magnetic means; Details thereof, e.g. magnetic pole arrangement of magnetic devices
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0005—Cleaning of residual toner
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78903168A | 1968-12-31 | 1968-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1965293A1 true DE1965293A1 (de) | 1970-09-17 |
Family
ID=25146360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691965293 Withdrawn DE1965293A1 (de) | 1968-12-31 | 1969-12-29 | Elektrofotografisches Abbildungsverfahren |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3649262A (enrdf_load_stackoverflow) |
| BE (1) | BE743661A (enrdf_load_stackoverflow) |
| DE (1) | DE1965293A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2027431A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1296997A (enrdf_load_stackoverflow) |
| NL (1) | NL6919477A (enrdf_load_stackoverflow) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5144408B1 (enrdf_load_stackoverflow) * | 1970-12-26 | 1976-11-29 | ||
| US4330199A (en) * | 1972-04-13 | 1982-05-18 | Canon Kabushiki Kaisha | Electrophotographic device |
| US3865080A (en) * | 1973-01-17 | 1975-02-11 | Xerox Corp | Toner pickoff apparatus |
| US3851962A (en) * | 1973-08-29 | 1974-12-03 | Savin Business Machines Corp | Electrostatic hold down apparatus |
| US3921577A (en) * | 1974-05-28 | 1975-11-25 | Xerox Corp | Magnetic development units |
| US4063811A (en) * | 1975-04-11 | 1977-12-20 | Minolta Camera Kabushiki Kaisha | Electrophotographic copier |
| US4265998A (en) * | 1979-11-13 | 1981-05-05 | International Business Machines Corporation | Electrophotographic photoreceptive background areas cleaned by backcharge process |
| US4470693A (en) * | 1982-01-11 | 1984-09-11 | Pitney Bowes Inc. | Self-cleaning xerographic apparatus |
| JPS58122566A (ja) * | 1982-01-18 | 1983-07-21 | Toshiba Corp | 画像形成装置 |
| DE3309984C2 (de) * | 1982-04-16 | 1986-10-30 | Ricoh Co., Ltd., Tokio/Tokyo | Verfahren zur Steuerung der Bilddichte von mittels eines elektrophotographischen Kopiergerätes hergestellten Kopien |
| US4500198A (en) * | 1982-12-10 | 1985-02-19 | International Business Machines Corporation | Multiple roller magnetic brush developer having development electrode voltage switching |
| US4664504A (en) * | 1983-01-20 | 1987-05-12 | Tokyo Shibaura Denki Kabushiki Kaisha | Image forming apparatus |
| US4534641A (en) * | 1983-10-31 | 1985-08-13 | Xerox Corporation | Charge erase device for copying or reproduction machines and printers |
| US4609280A (en) * | 1983-10-31 | 1986-09-02 | International Business Machines Corporation | Xerographic apparatus and process with backside photoconductor imaging |
| US4538900A (en) * | 1983-11-09 | 1985-09-03 | Ricoh Company, Ltd. | Electrophotographic copying apparatus including drum conditioning apparatus and method |
| US4652114A (en) * | 1985-04-05 | 1987-03-24 | Minnesota Mining And Manufacturing Company | Electrophotographic copying apparatus and process |
| US4769676A (en) * | 1986-03-04 | 1988-09-06 | Kabushiki Kaisha Toshiba | Image forming apparatus including means for removing residual toner |
| US4800147A (en) * | 1987-08-03 | 1989-01-24 | Xerox Corporation | Xerographic process without conventional cleaner |
| JPH0283556A (ja) * | 1988-09-20 | 1990-03-23 | Minolta Camera Co Ltd | カラー画像形成装置 |
| JP2598131B2 (ja) * | 1989-05-31 | 1997-04-09 | 株式会社東芝 | 画像形成装置 |
| JP2633686B2 (ja) * | 1989-05-31 | 1997-07-23 | 株式会社東芝 | 画像形成装置 |
| JP2917357B2 (ja) * | 1990-02-07 | 1999-07-12 | ミノルタ株式会社 | 複写装置用磁性粉含有部材 |
| JPH056088A (ja) * | 1991-02-15 | 1993-01-14 | Toshiba Corp | 静電記録装置 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573881A (en) * | 1948-11-02 | 1951-11-06 | Battelle Development Corp | Method and apparatus for developing electrostatic images with electroscopic powder |
| US2756676A (en) * | 1953-05-04 | 1956-07-31 | Haloid Co | Method for the production of electrophotographic prints |
| US2911944A (en) * | 1954-09-16 | 1959-11-10 | Haloid Xerox Inc | Xerographic development apparatus |
| US2956487A (en) * | 1955-03-23 | 1960-10-18 | Rca Corp | Electrostatic printing |
| US2874064A (en) * | 1955-05-16 | 1959-02-17 | Haloid Xerox Inc | Xerographic cleaner |
| US2959153A (en) * | 1955-12-21 | 1960-11-08 | Ibm | Xerographic image developing apparatus |
| US2880699A (en) * | 1957-10-21 | 1959-04-07 | Haloid Xerox Inc | Xerographic development |
| US3008826A (en) * | 1958-03-06 | 1961-11-14 | Xerox Corp | Xerographic development |
| BE602721A (enrdf_load_stackoverflow) * | 1960-04-19 | |||
| US3257223A (en) * | 1962-11-01 | 1966-06-21 | Xerox Corp | Electrostatic powder cloud xerographic development method and apparatus |
| US3424131A (en) * | 1964-09-30 | 1969-01-28 | Xerox Corp | Electroded cascade development system |
| US3472657A (en) * | 1965-04-30 | 1969-10-14 | Xerox Corp | Xerographic development method and apparatus |
| US3424615A (en) * | 1966-01-03 | 1969-01-28 | Xerox Corp | Method and apparatus for cleaning xerographic plates |
| US3503776A (en) * | 1966-02-21 | 1970-03-31 | Xerox Corp | Xerographic development |
| US3484265A (en) * | 1966-07-21 | 1969-12-16 | Xerox Corp | Transversely reciprocating fluidized bed development method |
| US3412710A (en) * | 1966-10-11 | 1968-11-26 | Xerox Corp | Cleanup electrode |
| US3520604A (en) * | 1967-10-16 | 1970-07-14 | Addressograph Multigraph | Photoelectrostatic copier |
-
1968
- 1968-12-31 US US789031A patent/US3649262A/en not_active Expired - Lifetime
-
1969
- 1969-12-22 FR FR6944511A patent/FR2027431A1/fr not_active Withdrawn
- 1969-12-22 GB GB1296997D patent/GB1296997A/en not_active Expired
- 1969-12-24 BE BE743661D patent/BE743661A/xx unknown
- 1969-12-29 DE DE19691965293 patent/DE1965293A1/de not_active Withdrawn
- 1969-12-29 NL NL6919477A patent/NL6919477A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6919477A (enrdf_load_stackoverflow) | 1970-07-02 |
| GB1296997A (enrdf_load_stackoverflow) | 1972-11-22 |
| BE743661A (enrdf_load_stackoverflow) | 1970-06-24 |
| FR2027431A1 (enrdf_load_stackoverflow) | 1970-09-25 |
| US3649262A (en) | 1972-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |