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US Patent: 500,253
Revolving Harrow
Patentees:
Albert Johnson (exact or similar names) - Shelton, WA
Frederick Syvrnd (exact or similar names) - Shelton, WA

USPTO Classifications:
172/547, 172/549

Tool Categories:
agricultural : harrows

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
L. K. Munson
Ferdinand Seabenfeldt
M. J. McMahon
Patent Dates:
Applied: Jun. 07, 1892
Granted: Jun. 27, 1893

Patent Pictures:
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Description:
J. R. Sittelly - patent attorney

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