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US Patent: 2,793X
Horizontal circular valve pump spear
Patentee:
Ebenezer Leman (exact or similar names) - Boston, MA

USPTO Classifications:

Tool Categories:
industrial machines : pumps

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: May 23, 1817

Patent Pictures:
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Description:
Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.

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