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Patents for Elbert J. Hall
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,078,919Nov. 18, 1913E.J. HallInternal-combustion engineinternal combustion engines
1,212,478Jan. 16, 1917E.J. HallCarburetorcarburetors
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