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Patents for Harold E. McCray
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,625,043Apr. 19, 1927H.E. McCrayInternal Combustion Engineignition systems
1,648,737Nov. 08, 1927H.E. McCrayInternal Combustion Engine
1,803,120Apr. 28, 1931H.E. McCrayInternal Combustion Engine
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