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All Patents in class 15/104.92
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
110,959Jan. 17, 1871S. DarlingPen Cleanerdraftsman
370,379Sep. 27, 1887S. DarlingPen Cleanerdraftsman
370,380Sep. 27, 1887S. DarlingPen Cleaner Sponge Cupdraftsman
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