Show PATENTS RECENTLY ISSUED prepared for the mining review by davis davis patent attorneys washington concentrating table G H el more swarthmore pa apparatus for collecting precious metals L B gray boston mass 2 patents grizzly M duenner Qu enner nogales ariz plume J R rankin pueblo colo i I hydraulic cone concentrator intrator en F E marcy salt lake city utah apparatus for separating minerals A H smith glasgow scotland amalgamator G A geuen gellen san francisco calif concentrator N mossberg denver colo centrifugal separator H C s groves woodward okla |