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Patents for United States Compass Co.
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,035,974Aug. 20, 1912E.N. KraemerValve Spring Releaser and Retainervalve spring tools
1,147,804Jul. 27, 1915E.N. KraemerValve Spring Removervalve spring tools
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