Number | Name | Date | Kind |
---|---|---|---|
336114 | Donahue | Jul 1888 | |
1190863 | Corne et al. | Jul 1916 | |
1458805 | Christensen | Jun 1923 | |
1732386 | Sprockhoff | Oct 1929 | |
1864911 | Jodeck | Jun 1932 | |
1946414 | Schmid | Feb 1934 | |
1946415 | Schmid | Feb 1934 | |
2014431 | Foster | Sep 1935 | |
2118157 | Camp | May 1938 | |
2207399 | Gaertner | Jul 1940 | |
2369194 | Weber | Feb 1945 | |
2673451 | Gariel | Mar 1954 | |
2868384 | Puddington | Jul 1955 | |
3067878 | Genter | Dec 1962 | |
3346122 | Cornelissen | Oct 1967 | |
3450264 | Graybill | Jun 1969 | |
3456798 | Urdanoff | Jul 1969 | |
3491892 | McCann | Jan 1970 | |
3552554 | Olgard | Jan 1971 | |
3563389 | Mizraki | Feb 1971 | |
3666112 | Pielkenroad | May 1972 | |
3721347 | Pielkenroad | Mar 1973 | |
3797668 | Pielkenroad | Mar 1974 | |
3837501 | Pielkenroad | Sep 1974 | |
3899427 | Connelly et al. | Aug 1975 | |
3914175 | Kunz et al. | Oct 1975 | |
3925205 | Sparham | Dec 1975 | |
4042512 | McCarthy | Aug 1977 | |
4213865 | Wagner | Jul 1980 | |
4337561 | James | Jul 1982 |
Number | Date | Country |
---|---|---|
1098155 | Jul 1902 | FRX |
1015977 | Oct 1952 | FRX |
907 | Jan 1886 | GBX |
17980 | Jan 1897 | GBX |
238007 | Aug 1925 | GBX |
Entry |
---|
Clarification, Sedimentation, and Thickening Equipment-A Patent Review, by Barham, Matherne and Keller at p. 60, 1956. |