Top IPC subclasses
1
|
B32B
|
4
|
layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb,
|
2
|
B27N
|
3
|
manufacture by dry processes of articles, with or without organic binding agents, made from particle
|
3
|
B27D
|
2
|
working veneer or plywood
|