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Patents Granted on 1812-04-??
Patents 1 - 15 of 24
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NumberDatePatenteeTitleType
1,697XApr. 01, 1812J. McDonaldBrick machinebrick and tile making machines
1,699XApr. 01, 1812W. DunnPreparing magnesia
FX-1,706Apr. 01, 1812I. JenningsSuction pump and fire enginefire engine pumps
1,700XApr. 02, 1812E. ClarkScow
1,701XApr. 02, 1812J. ZwislerMaking candles with tallow and wax
1,702XApr. 03, 1812J. DavidsonHorizontal churnchurns
1,703XApr. 08, 1812J. Eagles, J. VanderpoolTobacco spinning and turning off wheel
1,704XApr. 08, 1812S. MoreyMode of obtaining power between the difference of a column of rarified and unrarified air
1,705XApr. 08, 1812N. Gillet, J. SmithBoring machinedrilling and boring
1,706XApr. 11, 1812A. Paxton, C. HesserCutting filesfiles
1,707XApr. 20, 1812L. AndersonCutting filesfiles
1,708XApr. 22, 1812Z. KelleyMachine for cutting mitresmiter machines
1,709XApr. 23, 1812B. ConnerConstruction of bridges
1,710XApr. 25, 1812J. EvelettPropelling boats by steam called the setting float steam boatsteamboats
1,711XApr. 25, 1812C. JenksQuilted clothing for a copper still head
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