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US Patent: 9,043X
Pump
Double forcing pumps
Patentee:
William Douglas (exact or similar names) - Middletown, Middlesex County, CT

USPTO Classifications:

Tool Categories:
industrial machines : pumps

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Aug. 20, 1835

Patent Pictures:
USPTO (New site tip)
Google Patents
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"Vintage Machinery" entry for W. & B. Douglas Mfg. Co.
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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