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Patents Granted on 1798-04-??
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
206XApr. 10, 1798J. ManningImprovement in raising water from fountainswater pumps
207XApr. 27, 1798J. MartinRegulation of tide action on spiral wheeltide mills
208XApr. 27, 1798M.J. BrunellRaising Waterwater pumps
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