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All Patents of Type: pipe cleaners
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,851,766Mar. 29, 1932C.F. Hotchkiss, Jr.Auger or Boring Devicepipe cleaners
1,912,525Jun. 06, 1933C.F. Hotchkiss, Jr.Pipe Cleaning Toolpipe cleaners
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