All Patents in class 175/40


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

All Patents in class 175/40
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	62,849	Mar. 12, 1867	T. Hofstatter	Improvement in Augers
	155,333	Sep. 22, 1874	W.L. Parmelee	Improvement in expansion-bits