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www.google.cahttp://www.google.ca/patents/US57124?utm_source=gb-gplus-sharePatent US57124 - IMPROVEMENT IN TAPS AND DIES

Patent US57124 - IMPROVEMENT IN TAPS AND DIES

IMPROVEMENT IN TAPS AND DIES

FRANKLIN S. GREGG et al

Abstract

Overview
Abstract
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Description
Claims

Patent number: 57124
Issue date: 14 Aug 1866

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