Home| FAQSearch:Advanced|Person|Company| Type|ClassLogin
Quick search:
Patent number:
Patent Date:
Patents for Howard M. Du Bois
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
165,800Jul. 20, 1875H.M. Du Bois, S.H. Davis, Jr.Lubricatortool lubricators
179,167Jun. 27, 1876H.M. Du BoisImprovement in polishing-machinesbelt sanders
Toggle print mode
Show pictures

Copyright © 2002-2024 - DATAMP