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NX Patent: NX-2,640
Mill for grinding, washing, etc, gold and silver ores
Patentee:
Northrop Rockwell - Castleton, Rutland County, VT

USPTO Classifications:

Tool Categories:
specialty machines : ore processing apparatus

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Jul. 05, 1816

Patent Pictures:
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X-Patents
Description:
NX series patents are X-patents that do not have numbers. They have been arbitrarily assigned NX numbers to allow them to be entered into the Datamp file. We do not know whether they were actual patents as all that we have are the listings. They are entered here for reference and further research only.

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