All Patents in class 29/889.61


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All Patents in class 29/889.61
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,196,497	Apr. 09, 1940	H.D. Heman	Method of Forming Tubular Members Having Thick Walled End Portions
	2,437,317	Mar. 09, 1948	D.J. Davis	Spot milling tubular blank for propeller blades
	2,561,705	Jul. 24, 1951	E. Lochman	Propeller and method of propeller manufacture