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US Patent: 56,869
Improvements in Machinery for Swaging the Heads of Screw Augers
Patentee:
Russell Jennings (exact or similar names) - Deep River, CT

USPTO Classifications:
76/2

Tool Categories:
woodworking machines : specialty woodworking machines : tool making machines
woodworking tools : hand drills : drill bits : auger bits

Assignees:
None

Manufacturer:
Russell Jennings Mfg. Co. - Deep River, CT

Witnesses:
M. M. Livingston
Wm. E. Lyon

Patent Dates:
Granted: Jul. 31, 1866
Antedated: Jan. 31, 1866

Patent Pictures: [ 1 | 2 ]
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Description:
This patent is the third that Jennings received for auger machinery to complement his earlier patents, 55,498 and 56,058.

From the 1886 book, "Federal Decisions, Vol. XXV. Patents, Copyright and Trade-marks", Held not abandoned by an experimental use, Jennings v. Pierce, 15 Blatch., 42.

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