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Patents for William O. Robbins
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	97,553	Dec. 07, 1869	W.O. Robbins, C.W. Stafford	Improvement in machines for preparing paving-blocks
	97,554	Dec. 07, 1869	W.O. Robbins, C.W. Stafford	Improvement in machinery for preparing wooden blocks for pavement

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