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| US Patent: 107,746 | ||||||||||||||||||||||||
| Steam Engine Cut-Off | ||||||||||||||||||||||||
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 Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Woodbury, Booth & Co. Woodbury’s Patent Model of an Automatic Cut-Off for a Steam Engine – ca 1870 | |||||||||||||||||||||||