Number | Date | Country | Kind |
---|---|---|---|
243479 | Jan 1976 | CAX |
Number | Name | Date | Kind |
---|---|---|---|
2776250 | Capell et al. | Jan 1957 | |
2776297 | Neuworth | Oct 1956 | |
2930821 | Schwoegler et al. | Mar 1960 |
Entry |
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Mair et al., "Journal of Research," National Bureau of Standards, vol. 32 (Apr. 1944) pp. 165 to 183. |
"Chromatographic Adsorption and Silica Gel," The Davison Chemical Corporation, Baltimore, Md. pp. 1 to 5 (1946). |