Show PATENTS RECENTLY ISSUED reported for the mining review by davis davis patent attorneys washington D C gold saving machine john hamilton seattle wash centrifugal for classifying minerals H richards richard s oston boston 13 mass ore cooler frank D baker denver colo process of treating gold john B rossman st paul minn reversing means for shafts harvey F seybert perry township armstrong county pa ore concentrator frank D atlanta ga ore separator frederick T ner chicago ill ore concentrating table thomas W scott santa rosa morenci Moren cl ariz machine for saving gold frank B roberts salem ore ainie shaft equipment henry L templer cleveland transvaal apparatus for testing mine gases joseph smith trinidad colo and louis C bonnot louisville Lo maville ohio ore classifier frank G janney salt lake city utah dump ear car herman pries michigan city ind crushing or pulverizing machine charles A dorn john 0 ludlam and charles F B bonnot canton method of treating e slag story B ladd washington D C ore crusher robert S watt robert 13 watt and arthur B watt los angeles cal Pulp Feeder joseph B green wallace idaho gold and sand washer a william R J graham phoenix ariz |