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Patents for Maryland Trust Co.
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
1,463,305Jul. 31, 1923S.D. Black, A.G. DeckerPumping apparatus
1,492,095Apr. 29, 1924S.D. Black, A.G. DeckerElectrically-driven toolhandheld power tools
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