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US Patent: 1,452,940
Boring machine
Patentee:
Charles Stecher (exact or similar names) - Chicago, IL

USPTO Classifications:
82/132

Tool Categories:
metalworking machines : drilling and boring

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Apr. 24, 1923

Patent Pictures:
USPTO (New site tip)
Google Patents
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Description:
This boring machine drills from below so that the chips fall out of the hole being drilled.

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