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Class Information
Number: 144/24.11
Name: Woodworking > Special-work machine > Log punching > And expanding
Description: Machine intended to also force the grain of the wood apart in the area pierced.

Patents under this class:

Patent Number Title Of Patent Date Issued
5211687 Apparatus and method for producing a hole in an article of wood or wood product May. 18, 1993
4706722 Incisor cleaning system Nov. 17, 1987
4655869 Method and apparatus for making expanded wood veneer products Apr. 7, 1987
4037499 Method and apparatus for perforating fibrous board surfaces in non-repetitive patterns Jul. 26, 1977

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