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US Patent: 279,360
Combined Drill or Reamer, Tap and Socket
Patentee:
Joseph W. Douglas - Middletown, Middlesex County, CT

USPTO Classifications:
408/218, 408/223

Tool Categories:
industrial tools : taps and dies

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 04, 1882
Granted: Jun. 12, 1883

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for W. & B. Douglas Mfg. Co.

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