CPC Subgroup
B27M 3/32 of tapered poles, e.g. mine props
Full Title
Manufacture or reconditioning of specific semi-finished or finished articles (features of copying devices B23Q; manufacture of plywood or veneer, shaping plywood or veneer into articles B27D; of central layers for plywood B27D1/06; nailing or stapling machines in general B27F7/00; of elements for cooperage or wheel making B27H ) > of tapered poles, e.g. mine props