Number | Date | Country | Kind |
---|---|---|---|
2445523 | Sep 1974 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1940136 | Haglund | Dec 1933 | |
2192239 | Palmrose | Mar 1940 | |
2749241 | Marpillero | Jun 1956 | |
2859108 | Rosenblad | Nov 1958 | |
3046182 | Tomlinson et al. | Jul 1962 | |
3067086 | Wilson et al. | Dec 1962 | |
3262839 | Luthgens | Jul 1966 | |
3383277 | Gordon et al. | May 1968 |
Number | Date | Country |
---|---|---|
237583 | Feb 1969 | SUX |
Entry |
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Parfenova, "Increasing the Yield and Improving the Quality of Sulfite Pulp by Multistage Cooking" Bumazh, Prom, No. 7:11-12 (Jul. 1970), A.B.I.P.C. Abstract #5374, vol. 41, No. 6 (Dec. 1970). |
Mencher, "Bisulfite Semichemical Pulp Optimization of the Stepwise Bisulfite/Sulfite Cooks" 12v. VUZ, Lesnoi Zh. 15, No. 4:121-126 (1972), A.B.I.P.C. Abstract #10632 vol. |
Parfenova et al., USSR Pat. 403,795, 10-26-73, A.B.I.P.C. Abtract #11383, vol. 44, No. 10 (Apr. 1974). |