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US Patent: 478,296
Spark and Cinder Attachment for Smoke Stacks
Patentee: Benjamin W. Sweet (exact or similar names) - Portsmouth, Scioto County, OH USPTO Classifications: 110/145, 454/2 Tool Categories: propulsion and energy : steam apparatus : stationary boilers : spark arresters propulsion and energy : steam apparatus : steam traction engines : traction engine spark arresters Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 30, 1891 Granted: Jul. 05, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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