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All Patents in class 222/584
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
21,554Sep. 21, 1858S. DarlingInkstanddraftsman
111,435Jan. 31, 1871S. DarlingImprovment in Inkstandsdraftsman
RE6,443May 25, 1875S. DarlingImprovment in Inkstandsdraftsman
RE6,574Aug. 03, 1875S. DarlingImprovment in Inkstandsdraftsman
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