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US Patent: 1,998,275
Multiple tapping device
Patentee: George W. Emrick (exact or similar names) - Brooklyn, NY USPTO Classifications: 408/117, 408/133, 470/96, 470/99 Tool Categories: metalworking machines : drilling and boring : tapping heads and chucks Assignees: None Manufacturer: ETTCO Tool Co., Inc. - Brooklyn, NY Witnesses: Unknown	Patent Dates: Applied: Jun. 18, 1934 Granted: Apr. 16, 1935 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for ETTCO Tool Co., Inc.

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