All Patents in class 60/448


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All Patents in class 60/448
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	1,998,004	Apr. 16, 1935	H. Ernst	Differential Hydraulic Speed Gear
	2,474,706	Jun. 28, 1949	G.A. Wahlmark	Hydraulic transmission
	2,731,569	Jan. 17, 1956	J.S. Cardillo, M.M. Hann, F.G. Lundgard, S.J. L	Hydraulic transmission and control
	2,888,806	Jun. 02, 1959	K.A. Teumer	Control system