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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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