All Patents in class 249/174


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All Patents in class 249/174
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	97,953	Dec. 14, 1869	C.B. Morse	Improvement in cast-steel tube or ingot
	235,796	Dec. 21, 1880	C.B. Morse	Mold and core for casting hollow ingots
	810,276	Jan. 16, 1906	J.B. Hill	Mold for Drain or Sewer Pipes