Home| FAQSearch:Advanced|Person|Company| Type|ClassLogin
Quick search:
Patent number:
Patent Date:
Patents for Frank H. Duffy
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
187,513Feb. 20, 1877E.E. ColbyImprovement in bridgesbridges
206,067Jul. 16, 1878R. AllisonFeed Screw and Nut For Rock Drills, etc.auxiliary wrenches
226,339Apr. 06, 1880J. MoffetMonkey-Wrenchscrew adjust wrenches
Toggle print mode
Show pictures

Copyright © 2002-2024 - DATAMP