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US Patent: 290,450
Safety-valve
Patentee: Christopher Ahrens (exact or similar names) - Cincinnati, OH USPTO Classifications: 137/523, 137/542, 251/86 Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: None Manufacturer: American Fire Engine Co. - Seneca Falls, NY Witnesses: John A. Smith Leroy I. Emery	Patent Dates: Applied: Aug. 20, 1883 Granted: Dec. 18, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Silsby, Race & Holly
Description: This patent number was seen in an 1893 catalog from the American Fire Engine Co., a firm descended from Silsby, Race & Holly (see link).

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