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Patents for Henry J. Dart & Co.
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
53,915Apr. 10, 1866H.J. BehrensRotary Steam Enginerotary steam engines
77,373Apr. 28, 1868D.D. HardyRotary Enginerotary steam engines
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