Show PATENTS RECENTLY ISSUED reported specially for this paper by R W bishop patent attorney washington D C method of eliminating copper from coagulated cellulose emile crummere Cru paris france process of treating ore F R carpenter denver colo assignor to the american iron and steel alloys co same place pump for mine shafts richard heidecke and otto bellau neuhof germany mine root roof support F C keighley uniontown Union town pa rock crusher J R fogg kennett square pa mine car pedestal J R roberts Wilkes barre pa apparatus for extraction of gold from crushed ore T E beaumont london england continuous filter press A J arbuckle johannesburg transvaal method of treating copper A J rossi new york N Y assignor to the titanium alloy manufacturing company same place metallurgical process A G betts troy N Y process of making manganese A G betts troy N Y botary screen H G king denver colo pressure filter C W merrill lead S D rock drill albert ball claremont N H assignor to sullivan machinery company same place attachment for miners caps william firman ottumwa process of extracting zinc E H bloxwich england assignor of one half to the new delaville spelter company spring hill england magnetic separator gustaf grondal djursholm sweden |