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All Patents in class 411/975
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
221,299Nov. 04, 1879W. GrayNut-Lockauxiliary wrenches
759,599May 10, 1904C.G. EtteWasher
888,982May 26, 1908C.G. EtteWasher
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