Number | Name | Date | Kind |
---|---|---|---|
2425768 | Wagner | Aug 1947 | |
2561418 | Ryan | Jul 1951 | |
2957822 | Frint | Oct 1960 | |
3105046 | Fischer | Sep 1963 | |
3471402 | Shannon et al. | Oct 1969 |
Entry |
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Rogers, Composition and Properties of Oil Well Drilling Fluids, Third Edition, 1963, pp. 471, 475, 477 and 478. |
Kerr, Chemistry and Industry of Starch, 1944, p. 191. |