Show MINERAL PATENTS RECEIVED reported specially for this paper by R W bishop patent attorney washington D C ore ore classifier J V dorr lead S D ore separator J W gibson milwaukee wis attachment for supplying water to rock drills E M weston johannesburg transvaal ore roasting and treating apparatus pa ratus myron and alvin dings milwaukee wis 8 5 hol hoisting sting device max metzger chicago ill rock drill C E milwaukee wis assignor of one half to F L horneffer same place sample mixer U A garred anaconda mont machine for separating gold and platinum from other material nater lal C 0 salt lake city utah |