Number | Date | Country | Kind |
---|---|---|---|
2823161 | May 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2647099 | Smith, Jr. | Jul 1953 | |
2863854 | Wilson | Dec 1958 | |
3167524 | Fauck | Jan 1965 | |
3491066 | Petropoulos et al. | Jan 1970 | |
3554742 | Gromza et al. | Jan 1971 | |
4137221 | Hara et al. | Jan 1979 |
Entry |
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A. K. Doolittle-Technology of Solvent and Plasticizers John Wiley & Sons, Inc. pp. 1006 & 1015-1954. |