GB966731A - Glass article and method of production - Google Patents
Glass article and method of productionInfo
- Publication number
- GB966731A GB966731A GB2144362A GB2144362A GB966731A GB 966731 A GB966731 A GB 966731A GB 2144362 A GB2144362 A GB 2144362A GB 2144362 A GB2144362 A GB 2144362A GB 966731 A GB966731 A GB 966731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- ions
- lithium
- larger
- glass article
- 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
- 239000011521 glass Substances 0.000 title abstract 7
- 150000002500 ions Chemical class 0.000 abstract 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract 3
- 229910000502 Li-aluminosilicate Inorganic materials 0.000 abstract 1
- OUFSPJHSJZZGCE-UHFFFAOYSA-N aluminum lithium silicate Chemical compound [Li+].[Al+3].[O-][Si]([O-])([O-])[O-] OUFSPJHSJZZGCE-UHFFFAOYSA-N 0.000 abstract 1
- 238000005342 ion exchange Methods 0.000 abstract 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 abstract 1
- 229910052912 lithium silicate Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 159000000000 sodium salts Chemical class 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
To strengthen a glass article formed from a lithium-silicate or lithium-aluminium-silicate glass, the glass surface is contacted with a source of exchangeable monovalent ions larger than lithium ions at an elevated temperature but below the glass strain point to thermochemically exchange lithium ions from the glass with the larger ions to form a surface layer in which a portion of the lithium ions have been replaced by the larger monovalent ions, the ion exchange being continued for a sufficient time to impart increased abraded strength to the glass article. A molten sodium salt is the preferred source of the larger monovalent ions. A large number of examples of compositions are given. Specifications 454,448, 786,951, 917,388, 966,733 and 966,734 and U.S.A. Specification 2,075,446 are referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18188662A | 1962-03-23 | 1962-03-23 | |
| US18188862A | 1962-03-23 | 1962-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB966731A true GB966731A (en) | 1964-08-12 |
Family
ID=26877601
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2144362A Expired GB966731A (en) | 1962-03-23 | 1962-06-04 | Glass article and method of production |
| GB2144462A Expired GB966732A (en) | 1962-03-23 | 1962-06-04 | Improved method of glass treatment and product |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2144462A Expired GB966732A (en) | 1962-03-23 | 1962-06-04 | Improved method of glass treatment and product |
Country Status (6)
| Country | Link |
|---|---|
| BE (2) | BE618739A (en) |
| CH (2) | CH460263A (en) |
| DE (2) | DE1421845C3 (en) |
| FI (1) | FI43219B (en) |
| GB (2) | GB966731A (en) |
| NL (3) | NL279297A (en) |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2001085A1 (en) * | 1968-02-01 | 1969-09-26 | Jenaer Glaswerk Schott & Gen | |
| FR2047075A2 (en) * | 1969-06-23 | 1971-03-12 | Jenaer Glaswerk Schott & Gen | |
| US8551898B2 (en) | 2011-10-25 | 2013-10-08 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US9034442B2 (en) | 2012-11-30 | 2015-05-19 | Corning Incorporated | Strengthened borosilicate glass containers with improved damage tolerance |
| US9145329B2 (en) | 2011-10-25 | 2015-09-29 | Corning Incorporated | Alkaline earth alumino-silicate glass compositions with improved chemical and mechanical durability |
| US9186295B2 (en) | 2011-10-25 | 2015-11-17 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9428302B2 (en) | 2012-06-28 | 2016-08-30 | Corning Incorporated | Delamination resistant glass containers with heat-tolerant coatings |
| US9517966B2 (en) | 2011-10-25 | 2016-12-13 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US9603775B2 (en) | 2013-04-24 | 2017-03-28 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9668936B2 (en) | 2012-02-28 | 2017-06-06 | Corning Incorporated | Glass articles with low-friction coatings |
| US9700486B2 (en) | 2013-04-24 | 2017-07-11 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9700485B2 (en) | 2013-04-24 | 2017-07-11 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9707154B2 (en) | 2013-04-24 | 2017-07-18 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9707155B2 (en) | 2013-04-24 | 2017-07-18 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9707153B2 (en) | 2013-04-24 | 2017-07-18 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9713572B2 (en) | 2013-04-24 | 2017-07-25 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9717648B2 (en) | 2013-04-24 | 2017-08-01 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9717649B2 (en) | 2013-04-24 | 2017-08-01 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9839579B2 (en) | 2013-04-24 | 2017-12-12 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9849066B2 (en) | 2013-04-24 | 2017-12-26 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US10065884B2 (en) | 2014-11-26 | 2018-09-04 | Corning Incorporated | Methods for producing strengthened and durable glass containers |
| US10117806B2 (en) | 2012-11-30 | 2018-11-06 | Corning Incorporated | Strengthened glass containers resistant to delamination and damage |
| US10350139B2 (en) | 2011-10-25 | 2019-07-16 | Corning Incorporated | Pharmaceutical glass packaging assuring pharmaceutical sterility |
| US10737973B2 (en) | 2012-02-28 | 2020-08-11 | Corning Incorporated | Pharmaceutical glass coating for achieving particle reduction |
| US10899659B2 (en) | 2014-09-05 | 2021-01-26 | Corning Incorporated | Glass articles and methods for improving the reliability of glass articles |
| US11208348B2 (en) | 2015-09-30 | 2021-12-28 | Corning Incorporated | Halogenated polyimide siloxane chemical compositions and glass articles with halogenated polyimide siloxane low-friction coatings |
| US11220452B2 (en) | 2016-01-08 | 2022-01-11 | Corning Incorporated | Chemically strengthenable lithium aluminosilicate glasses with inherent damage resistance |
| US11497681B2 (en) | 2012-02-28 | 2022-11-15 | Corning Incorporated | Glass articles with low-friction coatings |
| US11772846B2 (en) | 2015-10-30 | 2023-10-03 | Corning Incorporated | Glass articles with mixed polymer and metal oxide coatings |
-
0
- NL NL279298D patent/NL279298A/xx unknown
- BE BE618740D patent/BE618740A/xx unknown
- NL NL122216D patent/NL122216C/xx active
- BE BE618739D patent/BE618739A/xx unknown
- NL NL279297D patent/NL279297A/xx unknown
-
1962
- 1962-06-04 GB GB2144362A patent/GB966731A/en not_active Expired
- 1962-06-04 GB GB2144462A patent/GB966732A/en not_active Expired
- 1962-06-07 FI FI112662A patent/FI43219B/fi active
- 1962-06-08 CH CH696362A patent/CH460263A/en unknown
- 1962-06-08 CH CH696562A patent/CH442639A/en unknown
- 1962-06-09 DE DE19621421845 patent/DE1421845C3/en not_active Expired
- 1962-06-09 DE DE19621421846 patent/DE1421846B2/en not_active Withdrawn
Cited By (82)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2001085A1 (en) * | 1968-02-01 | 1969-09-26 | Jenaer Glaswerk Schott & Gen | |
| FR2047075A2 (en) * | 1969-06-23 | 1971-03-12 | Jenaer Glaswerk Schott & Gen | |
| US9474688B2 (en) | 2011-10-25 | 2016-10-25 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US10350139B2 (en) | 2011-10-25 | 2019-07-16 | Corning Incorporated | Pharmaceutical glass packaging assuring pharmaceutical sterility |
| US10196298B2 (en) | 2011-10-25 | 2019-02-05 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US11707408B2 (en) | 2011-10-25 | 2023-07-25 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9145329B2 (en) | 2011-10-25 | 2015-09-29 | Corning Incorporated | Alkaline earth alumino-silicate glass compositions with improved chemical and mechanical durability |
| US9186295B2 (en) | 2011-10-25 | 2015-11-17 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9198829B2 (en) | 2011-10-25 | 2015-12-01 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9241869B2 (en) | 2011-10-25 | 2016-01-26 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US11707410B2 (en) | 2011-10-25 | 2023-07-25 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9340447B2 (en) | 2011-10-25 | 2016-05-17 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US11707409B2 (en) | 2011-10-25 | 2023-07-25 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US11325855B2 (en) | 2011-10-25 | 2022-05-10 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US8980777B2 (en) | 2011-10-25 | 2015-03-17 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US8753994B2 (en) | 2011-10-25 | 2014-06-17 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US10441505B2 (en) | 2011-10-25 | 2019-10-15 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US11168017B2 (en) | 2011-10-25 | 2021-11-09 | Corning Incorporated | Alkaline earth alumino-silicate glass compositions with improved chemical and mechanical durability |
| US9617183B2 (en) | 2011-10-25 | 2017-04-11 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US9624125B2 (en) | 2011-10-25 | 2017-04-18 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US8551898B2 (en) | 2011-10-25 | 2013-10-08 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US10597322B2 (en) | 2011-10-25 | 2020-03-24 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US10577274B2 (en) | 2011-10-25 | 2020-03-03 | Corning Incorporated | Alkaline earth alumino-silicate glass compositions with improved chemical and mechanical durability |
| US9517966B2 (en) | 2011-10-25 | 2016-12-13 | Corning Incorporated | Glass compositions with improved chemical and mechanical durability |
| US10413483B2 (en) | 2011-10-25 | 2019-09-17 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US10413481B2 (en) | 2011-10-25 | 2019-09-17 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US10413482B2 (en) | 2011-10-25 | 2019-09-17 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9718721B2 (en) | 2011-10-25 | 2017-08-01 | Corning Incorporated | Alkaline earth alumino-silicate glass compositions with improved chemical and mechanical durability |
| US9474689B2 (en) | 2011-10-25 | 2016-10-25 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US11020317B2 (en) | 2012-02-28 | 2021-06-01 | Corning Incorporated | Glass articles with low-friction coatings |
| US11737951B2 (en) | 2012-02-28 | 2023-08-29 | Corning Incorporated | Glass articles with low-friction coatings |
| US9763852B2 (en) | 2012-02-28 | 2017-09-19 | Corning Incorporated | Glass articles with low-friction coatings |
| US9775775B2 (en) | 2012-02-28 | 2017-10-03 | Corning Incorporated | Glass articles with low-friction coatings |
| US11939259B2 (en) | 2012-02-28 | 2024-03-26 | Corning Incorporated | Pharmaceutical glass coating for achieving particle reduction |
| US11872189B2 (en) | 2012-02-28 | 2024-01-16 | Corning Incorporated | Glass articles with low-friction coatings |
| US9918898B2 (en) | 2012-02-28 | 2018-03-20 | Corning Incorporated | Glass articles with low-friction coatings |
| US11786441B2 (en) | 2012-02-28 | 2023-10-17 | Corning Incorporated | Glass articles with low-friction coatings |
| US10034816B2 (en) | 2012-02-28 | 2018-07-31 | Corning Incorporated | Glass articles with low-friction coatings |
| US10737973B2 (en) | 2012-02-28 | 2020-08-11 | Corning Incorporated | Pharmaceutical glass coating for achieving particle reduction |
| US9744099B2 (en) | 2012-02-28 | 2017-08-29 | Corning Incorporated | Glass articles with low-friction coatings |
| US11497681B2 (en) | 2012-02-28 | 2022-11-15 | Corning Incorporated | Glass articles with low-friction coatings |
| US11007117B2 (en) | 2012-02-28 | 2021-05-18 | Corning Incorporated | Glass articles with low-friction coatings |
| US9668936B2 (en) | 2012-02-28 | 2017-06-06 | Corning Incorporated | Glass articles with low-friction coatings |
| US11071689B2 (en) | 2012-02-28 | 2021-07-27 | Corning Incorporated | Glass articles with low-friction coatings |
| US10273048B2 (en) | 2012-06-07 | 2019-04-30 | Corning Incorporated | Delamination resistant glass containers with heat-tolerant coatings |
| US9428302B2 (en) | 2012-06-28 | 2016-08-30 | Corning Incorporated | Delamination resistant glass containers with heat-tolerant coatings |
| US10273049B2 (en) | 2012-06-28 | 2019-04-30 | Corning Incorporated | Delamination resistant glass containers with heat-tolerant coatings |
| US11608290B2 (en) | 2012-06-28 | 2023-03-21 | Corning Incorporated | Delamination resistant glass containers with heat-tolerant coatings |
| US10787292B2 (en) | 2012-06-28 | 2020-09-29 | Corning Incorporated | Delamination resistant glass containers with heat-tolerant coatings |
| US10813835B2 (en) | 2012-11-30 | 2020-10-27 | Corning Incorporated | Glass containers with improved strength and improved damage tolerance |
| US10307334B2 (en) | 2012-11-30 | 2019-06-04 | Corning Incorporated | Glass containers with delamination resistance and improved damage tolerance |
| US11963927B2 (en) | 2012-11-30 | 2024-04-23 | Corning Incorporated | Glass containers with delamination resistance and improved damage tolerance |
| US11951072B2 (en) | 2012-11-30 | 2024-04-09 | Corning Incorporated | Glass containers with improved strength and improved damage tolerance |
| US10023495B2 (en) | 2012-11-30 | 2018-07-17 | Corning Incorporated | Glass containers with improved strength and improved damage tolerance |
| US10786431B2 (en) | 2012-11-30 | 2020-09-29 | Corning Incorporated | Glass containers with delamination resistance and improved damage tolerance |
| US9034442B2 (en) | 2012-11-30 | 2015-05-19 | Corning Incorporated | Strengthened borosilicate glass containers with improved damage tolerance |
| US9272946B2 (en) | 2012-11-30 | 2016-03-01 | Corning Incorporated | Glass containers with delamination resistance and improved strength |
| US9346707B2 (en) | 2012-11-30 | 2016-05-24 | Corning Incorporated | Methods for forming delamination resistant glass containers |
| US10507164B2 (en) | 2012-11-30 | 2019-12-17 | Corning Incorporated | Glass containers with improved strength and improved damage tolerance |
| US10117806B2 (en) | 2012-11-30 | 2018-11-06 | Corning Incorporated | Strengthened glass containers resistant to delamination and damage |
| US10307333B2 (en) | 2012-11-30 | 2019-06-04 | Corning Incorporated | Glass containers with delamination resistance and improved damage tolerance |
| US9713572B2 (en) | 2013-04-24 | 2017-07-25 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9707154B2 (en) | 2013-04-24 | 2017-07-18 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9700485B2 (en) | 2013-04-24 | 2017-07-11 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9603775B2 (en) | 2013-04-24 | 2017-03-28 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9717649B2 (en) | 2013-04-24 | 2017-08-01 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9717648B2 (en) | 2013-04-24 | 2017-08-01 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9700486B2 (en) | 2013-04-24 | 2017-07-11 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9707153B2 (en) | 2013-04-24 | 2017-07-18 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9707155B2 (en) | 2013-04-24 | 2017-07-18 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9839579B2 (en) | 2013-04-24 | 2017-12-12 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
| US9849066B2 (en) | 2013-04-24 | 2017-12-26 | Corning Incorporated | Delamination resistant pharmaceutical glass containers containing active pharmaceutical ingredients |
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| US11807570B2 (en) | 2014-09-05 | 2023-11-07 | Corning Incorporated | Glass articles and methods for improving the reliability of glass articles |
| US10065884B2 (en) | 2014-11-26 | 2018-09-04 | Corning Incorporated | Methods for producing strengthened and durable glass containers |
| US11208348B2 (en) | 2015-09-30 | 2021-12-28 | Corning Incorporated | Halogenated polyimide siloxane chemical compositions and glass articles with halogenated polyimide siloxane low-friction coatings |
| US11772846B2 (en) | 2015-10-30 | 2023-10-03 | Corning Incorporated | Glass articles with mixed polymer and metal oxide coatings |
| US12103734B2 (en) | 2015-10-30 | 2024-10-01 | Corning Incorporated | Glass articles with mixed polymer and metal oxide coatings |
| US12110151B2 (en) | 2015-10-30 | 2024-10-08 | Corning Incorporated | Glass articles with mixed polymer and metal oxide coatings |
| US11718554B2 (en) | 2016-01-08 | 2023-08-08 | Corning Incorporated | Chemically strengthenable lithium aluminosilicate glasses with inherent damage resistance |
| US11220452B2 (en) | 2016-01-08 | 2022-01-11 | Corning Incorporated | Chemically strengthenable lithium aluminosilicate glasses with inherent damage resistance |
| US11993539B2 (en) | 2016-01-08 | 2024-05-28 | Corning Incorporated | Chemically strengthenable lithium aluminosilicate glasses with inherent damage resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| GB966732A (en) | 1964-08-12 |
| FI43219B (en) | 1970-11-02 |
| BE618739A (en) | |
| NL279297A (en) | |
| BE618740A (en) | |
| DE1421846B2 (en) | 1971-04-15 |
| NL122216C (en) | |
| DE1421845A1 (en) | 1968-11-07 |
| CH460263A (en) | 1968-07-31 |
| DE1421846A1 (en) | 1968-11-07 |
| DE1421845B2 (en) | 1973-08-23 |
| NL279298A (en) | |
| DE1421845C3 (en) | 1974-04-04 |
| CH442639A (en) | 1967-08-31 |
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