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All Patents of Type: pipe making machines
Patents 1 - 3 of 3
First set of recordsLast set of records
8,092XMar. 18, 1834A. CoffmanMachine for making stone or earthen pipes (Pipes and tubes)pipe making machines
1,184,947May 30, 1916J.C. Hewitt, J.A. GossettPipe-forming machinepipe making machines
3,478,557Nov. 18, 1969A.F. TremblayTube Reducing Machinepipe making machines
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