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Patents for Charles F. Laur
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
725,141Apr. 14, 1903A.E. Robinson, C.F. LaurSpeed Changing Mechanismmetal lathes
755,504Mar. 22, 1904A.E. Robinson, C.F. LaurVariable Speed Mechanism
818,632Apr. 24, 1906C.F. LaurVariable Speed Mechanismmetalworking speed changing mechanisms
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