Number | Name | Date | Kind |
---|---|---|---|
489197 | Pech | Jan 1893 | |
4056464 | Cross | Nov 1977 | |
4279741 | Campbell | Jul 1981 | |
4515689 | Vivier | May 1985 | |
4574046 | Sprow | Mar 1986 | |
4898666 | Kelsey | Feb 1990 |
Number | Date | Country |
---|---|---|
WO8202842 | Sep 1982 | WOX |
WO8604269 | Jul 1986 | WOX |
22995 | Aug 1906 | SEX |
47385 | Apr 1917 | SEX |
9000090 | Jan 1990 | WOX |
Entry |
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"Concentration of Fine Grained Heavy Minerals Using the Kelsey Centrifugal Jig,"Ausimm Perth Branch, Australia: Conference Sept.-Oct. 1986, by Capps and Waldram. |
"Kelsey Centrifugal Jig,"Bulletin 8862 by Carpco, Inc. |
USSR Inventor's Certificate No. 139,259 (1961)-Original Text and English Translation. |