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US Patent: 151,364
Improvement in the construction of pump-gearing
Patentee: Joseph W. Douglas (exact or similar names) - Middletown, CT USPTO Classifications: 74/519 Tool Categories: household : water and plumbing : household hand pumps Assignees: W. & B. Douglas - Middletown, CT Manufacturer: W. & B. Douglas - Middletown, CT Witnesses: E. W. N. Starr F. B. Comstock, Jr.	Patent Dates: Applied: Apr. 08, 1874 Granted: May 26, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for W. & B. Douglas

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