Number | Name | Date | Kind |
---|---|---|---|
1740280 | Bryant | Dec 1929 | |
5368694 | Rohlf et al. | Nov 1994 | |
5368742 | Roberts | Nov 1994 | |
5474655 | Schulte et al. | Dec 1995 |
Number | Date | Country |
---|---|---|
59-223390 | Dec 1984 | JPX |
600628 | Apr 1948 | GBX |
Entry |
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Pulp and Paper, James Casey, vol. 111, 3rd Ed., pp. 1578-1588. |