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All Patents in class 33/539
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
80,649Aug. 04, 1868B.F. MerrillImprovement in Gaugesspecial purpose gauges
133,086Nov. 19, 1872J. DonaldsonKey Way Gagespecial purpose gauges
683,871Oct. 01, 1901J. AckerlyKey Gagemeasurement gauges
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