The DuBois Bridge Piers
In November of 1871 the United States Circuit Court in Maryland ruled for John DuBois against the Philadelphia, Wilmington and Baltimore Railroad Company for patent infringement and awarded Mr. DuBois
Source: cecildaily.com
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In November of 1871 the United States Circuit Court in Maryland ruled for John DuBois against the Philadelphia, Wilmington and Baltimore Railroad Company for patent infringement and awarded Mr. DuBois