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US Patent: 828,585
Circuit-closer for trolley-signals
Patentee: Horace Thurston (exact or similar names) - Providence, RI USPTO Classifications: 246/252 Tool Categories: transportation : railroads : streetcars and trolleys Assignees: None Manufacturer: Not known to have been produced Witnesses: Howard E. Barlow E. D. Ogden	Patent Dates: Applied: Jan. 02, 1906 Granted: Aug. 14, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Thurston Mfg. Co.

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