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US Patent: 142,820
Improvement in screw-propellers
Patentees: Henry K. Stevens (exact or similar names) - Waterloo, NY Solomon Miller (exact or similar names) - Waterloo, NY USPTO Classifications: 416/220A, 416/220R, 416/242, 416/247A, 440/72 Tool Categories: structures : boats and ships transportation : boats and ships Assignees: Henry K. Stevens - Waterloo, NY Manufacturer: Howard Iron Works - Buffalo, NY Witnesses: Hugh Montgomery H. Van Amburgh	Patent Dates: Applied: Mar. 13, 1873 Granted: Sep. 16, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Howard Iron Works

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