United States Circuit CourtNorthern District of Illinois. AND JOHN P. COVEBT Vs. CHICAGO MANUFACTURING CO. TURING COM:PANT. VEGETABLE GRATEJohn Keagy Newark OhioThis invention coil turning., scientific american, 1873-01-11

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United States Circuit CourtNorthern District of Illinois. AND JOHN P. COVEBT Vs. CHICAGO MANUFACTURING CO. TURING COM:PANT. VEGETABLE GRATEJohn Keagy Newark OhioThis invention coil turning., scientific american, 1873-01-11

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