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Patents for S. P. Hollingsworth
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberTitleClassification(s)
167,311Improvement in Bench-Planes30/489, 30/490
918,450Wrench81/154
1,281,001Grinding and Polishing Machine142/13, 15/49.1, 451/160, 451/271, 451/281, 451/550
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