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US Patent: 3,030,818
Positive drive tapping attachments
Patentee: Asher I. Zagar (exact or similar names) - Brooklyn, NY USPTO Classifications: 192/51, 192/69.91, 408/124, 408/141, 74/377 Tool Categories: metalworking machines : drilling and boring : tapping machines Assignees: ETTCO Tool & Machine Co., Inc. - Brooklyn, NY Manufacturer: ETTCO Tool Co., Inc. - Brooklyn, NY Witnesses: Unknown	Patent Dates: Applied: Nov. 17, 1958 Granted: Apr. 24, 1962 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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