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US Patent: RE72
Improvement in machinery for manufacturing double-twist screw-augers
Patentee:
Ezra L'Hommedieu - Chester, CT

USPTO Classifications:
172/754, 76/102, 76/2

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Stephen L'Hommedieu
John C. Palmer

Patent Dates:
Granted: Jul. 30, 1845

Reissue Information:
Reissue of 851 (Jul. 24, 1838)

Patent Pictures:
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Description:
The original patent was issued jointly to Ezra L'Hommedieu and Richard N. Watrous, but this reissue notes that Watrous had assigned all his rights to L'Hommedieu.

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