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US Patent: 1,147,835
Low Water Alarm for Steam Boilers and the Like
Patentee: Robert Wood (exact or similar names) - New York, NY USPTO Classifications: 137/558, 73/333 Tool Categories: propulsion and energy : steam apparatus : low water alarms specialty tools : alarms Assignees: Nathan Mfg. Co. - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 06, 1913 Granted: Jul. 27, 1915 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Nathan Mfg. Co.

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