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All Patents in class 55/436
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,402,147Jan. 03, 1922A.A. DayAir washer and the like
1,847,452Mar. 01, 1932H.P. VaughanAir Cleanerair supply apparatus
2,813,597Nov. 19, 1957M.W. FirstMulti-dust collectors
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