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US Patent: 419,990
Spring-tooth harrow
Patentees:
Samuel Nevin Hench (exact or similar names) - York, PA
Walker A. Dromgold (exact or similar names) - York, PA

USPTO Classifications:
172/707

Tool Categories:
agricultural : harrows

Assignees:
None

Manufacturer:
Hench & Dromgold Co. - York, PA

Witnesses:
David O. Prince
William F. Eichar

Patent Dates:
Applied: Nov. 26, 1889
Granted: Jan. 21, 1890

Patent Pictures:
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Vintage Machinery entry for Hench & Dromgold Co.

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