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US Patent: 21,756
Improvement in centrifugal pumps
Patentee: William C. Hibbard (exact or similar names) - West Roxbury, MA USPTO Classifications: 415/204, 415/224.5 Tool Categories: industrial machines : pumps : rotary pumps Assignees: None Manufacturer: Atlantic Works (Boston) - Boston, MA Witnesses: H. A. Peeler John H. Tomlinson	Patent Dates: Granted: Oct. 12, 1858 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Atlantic Works (Boston)

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