A GRADER AND AMALGAMATOR FOR SEPARATING PRECIOUS METALS. ARMBRUSTER'S GRADER AND AMALGAMATOR. A MEDIAVAL IRONCLAD. AN IMPROVED CAR FENDER. NLN. TRANTER'S CAR FENDER. THE FIRST IRONCLAD 1585. AN AIR BRAKE STOP COCK. O'LEARY'S TRAIN PIPE STOP COCK., scientific american, 1894-04-28
A GRADER AND AMALGAMATOR FOR SEPARATING PRECIOUS METALS. ARMBRUSTER'S GRADER AND AMALGAMATOR. A MEDIAVAL IRONCLAD. AN IMPROVED CAR FENDER. NLN. TRANTER'S CAR FENDER. THE FIRST IRONCLAD 1585. AN AIR BRAKE STOP COCK. O'LEARY'S TRAIN PIPE STOP COCK., scientific american, 1894-04-28
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