Show 0 PATENTS RECENTLY ISSUED reported specially for the mining review by R W bishop patent attorney washington D 0 miners lamp thomas cossack belt mont oil well drilling apparatus H B martin iluff buffalo alo N Y to diamagnetic separation elmer gates chevy chase md assignor to T J mayer washington D 0 oil burner R G speer st louis mo assignor of one sixteenth to J W grinsell same place well derrick J 0 knupp chaffee pa well construction M D rochford los angeles cat cal oil burner frederick saffell fresno cal assignor of one half to R J powers san leandro cal metar metal extracting apparatus ap aratus 0 A ellis eldorado canyon nev process of obtaining zinc B E H hopkins london england ore car arnold stuck allegheny pa assignor to pressed steel car co pittsburg pa well drilling machine G D loomis tiffin ohio oil burner W H wafer cin chi cago ills assignor of ene cue half to L belcia beaumont tex |