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US Patent: 402,079
Spring-tooth harrow
Patentees: Samuel Nevin Hench (exact or similar names) - York, PA Walker A. Dromgold (exact or similar names) - York, PA USPTO Classifications: 172/643 Tool Categories: agricultural : harrows Assignees: None Manufacturer: Hench & Dromgold Co. - York, PA Witnesses: David O. Prince Arthur N. Green	Patent Dates: Applied: Feb. 11, 1889 Granted: Apr. 23, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hench & Dromgold Co.

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