Home| FAQSearch:Advanced|Person|Company| Type|ClassLogin
Quick search:
Patent number:
Patent Date:
Patents Granted on 1820-04-??
Patents 1 - 11 of 11
First set of recordsLast set of records
NumberDatePatenteeTitleType
3,189XApr. 04, 1820J. Day, H. DayImprovement in lockshousehold tools
3,190XApr. 04, 1820O. ParsonImprovement in boiling salt
3,191XApr. 04, 1820W. HolmesTwisted screw auger for boring gunsgunsmith
3,192XApr. 04, 1820G. BruceMaking shaded letters
3,193XApr. 04, 1820S.D. Fuller, J. ByramMachine for napping cloth, etc.
3,194XApr. 06, 1820P.H. MerrillCommon hoehoes
3,195XApr. 06, 1820S. Gillet (Gillett, Amr. Of S.)Double forcing pumppumps
3,196XApr. 12, 1820T. Newall (Newell)Planetarium, or heliogeastrium
3,197XApr. 20, 1820R. WilcoxApplication of steam in distilling and working steam enginesdistilling apparatus
3,198XApr. 20, 1820R. WilcoxPortable rotary oven
3,199XApr. 21, 1820H. HackleyBrewing by steam
Toggle print mode
Show pictures

Copyright © 2002-2024 - DATAMP