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US Patent: 2,457,040
Boring Head
Patentee:
William P. Hall (exact or similar names) - Berwyn, Chester County, PA

USPTO Classifications:
408/170, 475/263, 82/1.2

Tool Categories:
metalworking machines : drilling and boring : boring heads

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jan. 10, 1945
Granted: Dec. 21, 1948

Patent Pictures:
USPTO (New site tip)
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