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Patents for Julius H. Holmgreen
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,372,816Mar. 29, 1921J.H. HolmgreenBending Machine and Method of Bendingsheet metal bending machines
1,465,733Aug. 21, 1923J.H. HolmgreenBending Machinesheet metal bending machines
1,679,825Aug. 07, 1928R.J. Holmgreen, J.H. HolmgreenRotary Well Drilling Machinewell drilling machines
1,819,417Aug. 18, 1931J.H. HolmgreenJoint Packingpacking for joints
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