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Patents for E. Schaferr
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
40,650	Nov. 17, 1863	I. Straub, A. Straub	Improved artificial variegated marble	making rocks and stones
40,651	Nov. 17, 1863	I. Straub, A. Straub	Improved asphaltic paving or flag stone	making rocks and stones

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