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US Patent: 148,670
Regulators for Governors to Steam-Engines
Patentees: William L. B. Collins (exact or similar names) - Vacaville, Solano County, CA Joshua Donaldson (exact or similar names) - Vacaville, Solano County, CA USPTO Classifications: 279/58, 403/81, 74/586 Tool Categories: propulsion and energy : steam engines : steam engine governors Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 10, 1874 Granted: Mar. 17, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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