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US Patent: 9,005X
Rotary pump
Patentee:
David M. Walker (exact or similar names) - Cavendish, VT

USPTO Classifications:
418/206.1

Tool Categories:
industrial machines : pumps : rotary pumps

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Aug. 15, 1835

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
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. Only the patent drawing is available. This patent is in the database for reference only.

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