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US Patent: 270,028
Self Belting Pulley
Patentee:
John E. Donovan (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:
474/120

Tool Categories:
industrial machines : industrial machine mechanisms : industrial machine pulleys and belt drive mechanisms

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jul. 06, 1882
Granted: Jan. 02, 1883

Patent Pictures:
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