Number | Date | Country | Kind |
---|---|---|---|
7705513 | May 1977 | SEX |
Number | Name | Date | Kind |
---|---|---|---|
B300004 | Putman | Jan 1975 | |
3486971 | Weyrick | Dec 1969 | |
3562384 | Sloman | Mar 1972 | |
3679543 | Rivers | Jul 1972 | |
3962029 | Wettermark et al. | Jun 1976 |
Number | Date | Country |
---|---|---|
2537143 | Mar 1976 | DEX |
321560 | Jan 1972 | SUX |
Entry |
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Casey; Pulp & Paper, vol. I Second Ed., Interscience Publishers, Inc., New York, 1960 pp. 426-427. |
Burnett; "Computer Control of the Chlorine Stage"; Pulp & Paper Magazine of Canada, vol. 71, No. 14, Jul. 17, 1970. |