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1948-04-27 |
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1944-06-12 |
1948-06-08 |
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1945-12-14 |
1949-04-12 |
American Enka Corp |
Production of polyamides
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1948-04-19 |
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American Cyanamid Co |
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1948-07-29 |
1952-02-12 |
Du Pont |
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1948-07-29 |
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Preparation of shaped articles from acrylonitrile polymers
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Celanese Corp |
Process for the production of polyurethanes
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1954-07-21 |
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Eastman Kodak Co |
Polyamides of xylenediamine and an aliphatic dibasic acid up-graded with 1, 4-cyclohexanebis
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1957-09-18 |
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1962-10-23 |
1966-12-06 |
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1962-11-13 |
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1963-04-29 |
1968-12-24 |
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1964-11-12 |
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1965-04-30 |
1969-03-12 |
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1969-10-01 |
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