Show PATENTS RECENTLY ISSUED reported specially for this paper by rr W bishop patent attorney washington D C mining machine H B D dierdorff columbus ohio assignor to J A jeffrey same place rock breaker W A san francisco cal pneumatic hydraulic separator F W hopkins denver colo assignor to colorado iron works same place process of treating copper ores N V hybinette plainfield Plain neld N J crushing marcine mah mali cine J H mccormick beartown mont amalgamator R P hall gem idaho mining machine J A jeffrey columbus ohio grader for wash in gold saving A G kidston hunter dunedin new zealand concentrator H S dailey bailey and W E wild denver colo assignors assigners assign ors to mining milling machinery mfg mag co same 12 place ore separator H J burroughs los angeles cal reducing and separating machine E B craven asbestos ga b ore mill mil 1 W E wild denver je colo I 1 mining machine E P a columbus ohio amalgamator P J nelson id baltimore md assignor to baltimore amalgamator co of baltimore city latch for mine car doors C H smith trauger pa extraction of metals from complex i ores J B D de alzugaray bromley england |