Home| FAQSearch:Advanced|Person|Company| Type|ClassLogin
Quick search:
Patent number:
Patent Date:
Patents for Porter Farwell
Patents 1 - 1 of 1
First set of recordsLast set of records
NumberDatePatenteeTitleType
170,527Nov. 30, 1875C. CrammerImprovement in Expansible Tools For Cutting Holes of Different Sizesadjustable drill bits
Toggle print mode
Show pictures

Copyright © 2002-2024 - DATAMP