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US Patent: 401,516
Chimney or stack propeller and governor
Patentee: James A. Robb (exact or similar names) - San Jose, CA USPTO Classifications: 415/36, 415/4.2, 415/909, 60/641.12 Tool Categories: specialty machines : industrial furnaces Assignees: None Manufacturer: James A. Robb - San Francisco, CA Robb & Mitchell - San Francisco, CA Witnesses: S. H. Nourse H. C. Lee	Patent Dates: Applied: Apr. 14, 1888 Granted: Apr. 16, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for James A. Robb

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