IPC Subgroup
B32B 23/22 comprising ethers
Introduced: September 1968
Last revised: January 2006
Full Title
Layered products essentially comprising cellulosic plastic substances > comprising ethers
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- LAYERED PRODUCTS
- Subclass:
- LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM