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Class Information
Number: 142/23
Name: Wood turning > Circular section > Spiral grooving > Hollow cutter head
Description: Machines for reducing a stick to a circular section having a spiral groove in its circumference by passing the stock axially through a rotary hollow cutter-head having a chisel-cutter projecting through its circumference toward the axis of the stick.

Patents under this class:

Patent Number Title Of Patent Date Issued

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