Referenced by|
| US4252204 | Apr 9, 1979 | Feb 24, 1981 | Varian Associates | Walking drag line | | US4312424 | Jul 18, 1979 | Jan 26, 1982 | Washington Irrigation & Development Company | Automatic grease lubrication system for metering and dispensing lubrication grease onto rolling-sliding, line contact, bearing surface surface |
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