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

Quick search:	Patent number:	Patent Date:

Patents for David Hans Heynau
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,950,675	Mar. 13, 1934	D.H. Heynau	Friction gear for stepless changing the rotation of a driven shaft
	2,032,015	Feb. 25, 1936	D.H. Heynau	Friction gear transmission
	2,199,491	May 07, 1940	D.H. Heynau	Friction gear transmission

Toggle print mode
Hide pictures

Copyright © 2002-2025 - DATAMP